c-- ccc cce cch ccs ccz ce- cec cee ceh ces cez ch- chc che chh chs chz csc cse csh css csz cz- czc cze ec- ecc ece ech ecs eec eee ees ehc ehe ehh ehs es- esc ese esh ess eze ezh ezs ezz hcc hce hch hcs he- hec hee heh hes hez hhc hhe hhh hhs hhz hsc hse hsh hss hsz hze hzs scc sce sch scs se- sec see seh ses sez sh- shc she shh shs ss- ssc sse ssh sss ssz sze zce zcs zec zee zeh zes zez zhc zhe zhs zse zsh zsz zzs zzz