1 -----------------------2-3-5-2-3-5---3-2-3-5-3-2-----2---------------------
2 -----------------2-3-5---------------------------5-5---3-5-2-3---2---------
3 -------2-----2-4-----------------------------------------------4---2-4-----
4 -2-4-5---5-5-----------------------------------------------------------4-5-
1 -----------------7-9-10-12-14-15-17-14-15-17-15-14-15-17-15-14-12-12-14-10-
2 ---7-8-10-8-8-10-----------------------------------------------------------
3 -9-------------------------------------------------------------------------
1 --10-12-9-10-7-9----7-------------------------------------------------------
2 -----------------10---7-8------------------------------------------------------
