c-- ccc cce cch ccn ccs ce- cec cee ceh cen ces ch- chc che chh chn chs cn- cnc cne cnh cnn cns csc cse csh csn css ec- ecc ece ech ecn ecs eec eee een ees ehc ehe ehh ehn ehs en- enc ene enh enn ens es- esc ese esh esn ess hcc hce hch hcn hcs he- hec hee heh hen hes hhc hhe hhh hhn hhs hnc hne hnh hnn hns hsc hse hsh hsn hss ncc nce nch ncn ncs ne- nec nee neh nen nes nhc nhe nhh nhn nhs nnc nne nnh nnn nns nsc nse nsh nsn nss scc sce sch scn scs se- sec see seh sen ses sh- shc she shh shn shs snc sne snn sns ss- ssc sse ssh ssn sss