H123456,20151209,THIS IS A TEST
H123456,20151209,TO COMBINE ALL
H123456,20151209,MY MATCHING LINES
H123456,20151209,INTO THE FIRST LINE
H123456,20151209,THAT MATCHES.
H654321,20151209,MATCH LINES FOR THIS
H654321,20151209,ACCT INTO THE
H654321,20151209,TOP LINE OF THE ACCT
H432165,20151209,SINGLE LINE FOR THIS ONE

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H123456,20151209,THIS IS A TEST TO COMBINE ALL MY MATCHING LINES INTO THE FIRST LINE THAT MATCHES.
H654321,20151209,MATCH LINES FOR THIS ACCT INTO THE TOP LINE OF THE ACCT.
H432165,20151209,SINGLE LINE FOR THIS ONE