IMB,060410|,folded   ,307057959,307058193,235
IMB,060410|,selfmail ,307058194,307066458,8265
IMB,107951|,folded   ,958090350,958091491,1142
IMB,107951|,selfmail ,958091492,958132856,41365
SEQ,,folded    ,000000001,000001377,1377
SEQ,,selfmail  ,000001378,000051007,49630