-ic b-p bbb bbc bbh bbi bbo bbp bbs bcb bcc bch bci bco bcp bcs bhb bhc bhh bhi bho bhp bhs bi- bib bic bih bii bio bip bis bob boc boh boi boo bop bos bpb bpc bph bpi bpo bpp bps bsb bsc bsh bsi bso bsp bss c-- cbb cbc cbh cbi cbo cbp cbs ccb ccc cch cci cco ccp ccs ch- chb chc chh chi cho chp chs ci- cib cic cih cii cio cip cis co- cob coc coh coi coo cop cos cpb cpc cph cpi cpo cpp cps csb csc csh csi cso csp css h-i hbb hbc hbh hbi hbo hbp hbs hcb hcc hch hci hco hcp hcs hhb hhc hhh hhi hho hhp hhs hib hic hih hii hio hip his hob hoc hoh hoi hoo hop hos hpb hpc hph hpi hpo hpp hps hsb hsc hsh hsi hsp hss ibb ibc ibh ibi ibo ibp ibs icb icc ich ici ico icp ics ihb ihc ihh ihi iho ihp ihs iib iic iih iii iio iip iis io- iob ioc ioh ioi ioo iop ios ipb ipc ipi ipo ipp ips is- isb isc ish isi iso isp iss o-i ob- obb obc obh obi obo obp obs oc- ocb occ och oci oco ocp ocs ohc ohh ohi oho ohp ohs oib oic oii oio oip ois oo- oob ooc ooh ooi ooo oop oos op- opb opc oph opi opo opp ops os- osb osc osh osi oso osp oss p-p pbb pbc pbi pbo pbp pbs pcb pcc pch pci pco pcp pcs phb phc phi pho php phs pib pic pih pii pio pip pis pob poc poh poi poo pop pos ppb ppc pph ppi ppo ppp pps ps- psb psc psh psi pso psp pss sbb sbc sbh sbi sbo sbp sbs scb scc sch sci sco scp scs sh- shb shc shh shi sho shp shs sib sic sih sii sio sip sis sob soc soh soi soo sop sos spb spc sph spi spo spp sps ss- ssb ssc ssh ssi sso ssp sss