 10          1
 20          2
 25          3
 12          4
===          4pTTTDDD    P1                 2         1
aaabbbccc ddd
sssss ss  ssss sssss
===          2pTTTDDD    PPPN               2         1
       101
       101
===          1pTTTDDD    P1                 2         1
aaabbbccc ddd
sssss ss  ssss sssss
===          3pTTTDDD    PPPN               1         1
       101
===          4pTTTDDD    PPPN               3         1
       101
       100
       101
