c-- ccc cce cch cco ccp ccs ce- cec cee ceh ceo cep ces ch- chc che chh cho chp chs co- coc coe coh coo cop cos cpc cpe cph cpo cpp cps csc cse csh cso csp css ec- ecc ece ech eco ecs eec eee eeo eep ees ehc ehe ehh eho ehp ehs eo- eoc eoe eoh eoo eop eos ep- epc epe eph epo epp eps es- esc ese esh eso esp ess hcc hce hch hco hcp hcs he- hec hee heh heo hep hes hhc hhe hhh hho hhp hhs hoc hoe hoh hoo hop hos hpc hpe hph hpo hpp hps hsc hse hsh hsp hss oc- occ och oco ocp ocs oec oee oeh oeo oep oes ohc ohe ohh oho ohp ohs oo- ooc ooh ooo oop oos op- opc ope oph opo opp ops os- osc ose osh oso osp oss p-p pcc pce pch pco pcp pcs pec pee peh peo pep pes phc phe pho php phs poc poe poh poo pop pos ppc ppe pph ppo ppp pps ps- psc pse psh pso psp pss scc sce sch sco scp scs se- sec see seh seo sep ses sh- shc she shh sho shp shs soc soe soh soo sop sos spc spe sph spo spp sps ss- ssc sse ssh sso ssp sss