Apex and Visualforce Page - Data Display in Page - salesforce

Question

My Data displays the list results as grouped but does not create a singular display for the same value.
I would like the returned Data to Show everything grouped into a single column header...let me share the code.
To elaborate :
public Summary[] Summaries { get; set; }
public Alphabet() {
AggregateResult[] groupedResults = [select A,Sum(B)Currency,C from D WHERE A != null AND C < LAST_FISCAL_QUARTER GROUP BY A,C ORDER BY A limit 1000];
Summaries = new List<Summary>();
for (AggregateResult ar : groupedResults) {
Summaries.add(new Summary(ar));
}
}
public class Summary {
public String A{ get; private set; }
public Decimal B{ get; private set; }
public Date C{ get; private set; }
public Summary(AggregateResult ar) {
A= (String) ar.get('A');
B= (Decimal) ar.get('B');
C= (Date) ar.get('C');
}
}
}
My Page :
<apex:page controller="Alphabet">
<apex:form >
<apex:pageBlock >
<apex:pageBlockTable value="{! Summaries}" var="s">
<apex:column value="{! s.A}"/>
<apex:column value="{! s.B}"/>
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
</apex:page>
My Display :
enter image description here
But I would like it to look like this :
enter image description here
I deally I would like all th A1 values summed up together and not showing multiple A1's.
Please assist.