Append data to new cell arrays using Token - arrays

Question

I have a problem I couldnt solve it. I have a set of data present in lines (generally text that are organized in number of sentences)
Example of my text in sentence:
1. Hello, world, It, is, beautiful, to, see, you, all
2. ,Wishing, you, happy, day, ahead
I am using the strtok
[token remain] = strtok(remain, ', ');
% token = strtrim(token);
CellArray {NumberOFCells} = token(1:end) ;
NumberOFCells= NumberOFCells+1;
I am using the CellArray to store the Token into the cells however what my code does is it takes the first sentences and put into cells and once it iterates to the second sentence and it deletes the pre-assigned cells thus it replaces it with token of the second sentences.
Expected Output
[ nxn ] [ nxn ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] ......
'Hello' 'world' 'It' 'is' 'beautiful' 'to' see' 'you' 'all' 'Wishing' 'you' 'happy' 'day' 'ahead'
The question is how can I append the second sentence strings to the cells without clearing the pre-filled cells.
Thank you and looking forward to meet experts matlab programmer
My Code .. Ignore commented lines... Retrieved is basically in this form.
[Index,Retrieved] = system(['wn ' keyword type ]);
Retrieved;
arrowSymbol = ' => ';
CommaSymbol= ', '
NumberOfSense= 'Sense ';
% let's look for the lines with '=> ' only?
senses = regexp(Retrieved, [arrowSymbol '[\w, ]*\n '], 'match');
SplitIntoCell = regexp(senses, [CommaSymbol '[\w, ]*\n'], 'match');
% now, we take out the '=> ' symbol
for i = 1:size(senses, 2)
senses{i} = senses{i}(size(arrowSymbol,2):end);
SplitIntoCell{i}= SplitIntoCell{i}(size(CommaSymbol,2): end);
% SeperateCells= senses ([1:2 ; end-1:end]);
% SplitCellContentIntoSingleRows{i}= strtok (SeperateCells, ['\n' ])
numberCommas = size(regexp(senses{i}, CommaSymbol), 2);
remain = senses{i};
RestWord= SplitIntoCell{i};
NumberOFCells=1;
for j = 2:numberCommas + 1 + 1 % 1 for a word after last comma and 1 because starts at index 2
% RemoveCellComma= regexp (Conversion,',');
% CellArray = [CellArray strsplit(remain, ', ')];
% [str,~] = regexp(remain,'[^, \t]+', 'match', 'split');
% CellArray = [CellArray str];
% [token remain] = strtok(remain, ', ');
% token = strtrim(token);
% CellArray {NumberOFCells} = token(1:end) ;
%
% % CellArray =[CellArray strsplit(remain, ', ')]
% [str, ~]= regexp(remain,'[^, \t]+', 'match', 'split');
% CellArray = [CellArray str];
% NumberOFCells= NumberOFCells+1;
[token remain] = strtok(remain, ', ');
token = strtrim(token);
CellArray {NumberOFCells} = token;
NumberOFCells= NumberOFCells+1;
Retrieved=
cat, true cat
=> feline, felid
=> carnivore
=> placental, placental mammal, eutherian, eutherian mammal
=> mammal, mammalian
=> vertebrate, craniate
=> chordate
=> animal, animate being, beast, brute, creature, fauna
=> organism, being
=> living thing, animate thing
=> object, physical object
=> physical entity
=> entity

Answer 1

Your question is a little confusing, but reading it (and other comments) a couple of times, I think I understand what you're asking.
Eitan T is correct about using regexp for this, and when it comes to cell arrays, be careful of the difference in indexing/concatenation with [] and {}: see Combining Cell Arrays. Assuming your using a loop to go through each sentence, you can do something like:
CellArray = [CellArray strsplit(next_sentence, ', ')];
Using regexp (or it's case-insensitive alternative regexpi), try adding 'split' as another one of the function options, for example:
[str,~] = regexp(next_sentence,'[^, \t]+', 'match', 'split');
CellArray = [CellArray str];