appending a data from one dictionary to other

i need to append the dictionary in the left pic with the list of text strings mentioned in the right pic. First dictionary should have title:task Name appended after id and 2nd dictionary should have title:Due Date after id. once when first 7 in the dictionary is appended with the values from  list of text strings, the 8the value in dictionary should start to append from 1st again in the right pic. i tried looping using foreach but it never worked. Any help would be appreciated. 

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