c.1 ---------------------------------------------
c.2 ----8-8---6-5-6-5-----------5----5-6--5---5--
c.3 -5----------------7-7---5-7----7--------5---7
c.4 ---------------------------------------------
c.5 ---------------------------------------------
c.6 ---------------------------------------------
c.1 ---------------------------------------------
c.2 ----8-8---6-5-6-5-----------5----5-6--5---5--
c.3 -5----------------7-7---5-7----7--------5---8
c.4 ---------------------------------------------
c.5 ---------------------------------------------
c.6 ---------------------------------------------