b-p bbb bbc bbe bbh bbo bbp bbs bcb bcc bce bch bco bcp bcs be- beb bec bee beh beo bep bes bhb bhc bhe bhh bho bhp bhs bob boc boe boh boo bop bos bpb bpc bpe bph bpo bpp bps bsb bsc bse bsh bso bsp bss c-- cbb cbc cbe cbh cbo cbp cbs ccb ccc cce cch cco ccp ccs ce- ceb cec cee ceh ceo cep ces ch- chb chc che chh cho chp chs co- cob coc coe coh coo cop cos cpb cpc cpe cph cpo cpp cps csb csc cse csh cso csp css ebb ebc ebe ebh ebo ebp ebs ec- ecb ecc ece ech eco ecs eeb eec eee eeo eep ees ehb ehc ehe ehh eho ehp ehs eo- eob eoc eoe eoh eoo eop eos ep- epb epc epe eph epo epp eps es- esb esc ese esh eso esp ess hbb hbc hbe hbh hbo hbp hbs hcb hcc hce hch hco hcp hcs he- heb hec hee heh heo hep hes hhb hhc hhe hhh hho hhp hhs hob hoc hoe hoh hoo hop hos hpb hpc hpe hph hpo hpp hps hsb hsc hse hsh hsp hss ob- obb obc obe obh obo obp obs oc- ocb occ och oco ocp ocs oeb oec oee oeh oeo oep oes ohc ohe ohh oho ohp ohs oo- oob ooc ooh ooo oop oos op- opb opc ope oph opo opp ops os- osb osc ose osh oso osp oss p-p pbb pbc pbe pbo pbp pbs pcb pcc pce pch pco pcp pcs peb pec pee peh peo pep pes phb phc phe pho php phs pob poc poe poh poo pop pos ppb ppc ppe pph ppo ppp pps ps- psb psc pse psh pso psp pss sbb sbc sbe sbh sbo sbp sbs scb scc sce sch sco scp scs se- seb sec see seh seo sep ses sh- shb shc she shh sho shp shs sob soc soe soh soo sop sos spb spc spe sph spo spp sps ss- ssb ssc sse ssh sso ssp sss