-ic b-p bbb bbc bbi bbo bbp bbr bby bcb bcc bci bco bcp bcr bcy bi- bib bic bii bio bip bir biy bob boc boi boo bop bor boy bpb bpc bpi bpo bpp bpr bpy brb bri bro brp brr bry by- byc byi byo byp byr c-- cbb cbc cbi cbo cbp cbr cby ccb ccc cci cco ccp ccr ci- cib cic cii cio cip cir co- cob coc coi coo cop cor coy cpb cpc cpi cpo cpp cpr crb crc cri cro crp crr cry cyb cyc cyo cyp cyr ibb ibc ibi ibo ibp ibr iby icb icc ici ico icp icr icy iib iic iii iio iip iir io- iob ioc ioi ioo iop ior ipb ipc ipi ipo ipp ipr ipy ir- irb irc iri iro irp irr iry iyc iyo iyr iyy o-i ob- obb obc obi obo obp obr oby oc- ocb occ oci oco ocp ocr oib oic oii oio oip oir oo- oob ooc ooi ooo oop oor op- opb opc opi opo opp opr opy or- orb orc ori oro orp orr ory oyi oyo p-p pbb pbc pbi pbo pbp pbr pby pcb pcc pci pco pcp pcr pib pic pii pio pip pir pob poc poi poo pop por poy ppb ppc ppi ppo ppp ppr prb prc pri pro prp prr pry py- pyb pyc pyo pyr rbb rbc rbi rbo rbp rbr rcb rcc rci rco rcp rcr rib ric rii rio rip rir riy rob roc roi roo rop ror roy rpb rpc rpi rpo rpp rpr rrb rrc rri rrp rrr ry- ryc ryo ryr ryy ybc ybi ybp ybr yby ycc yci yco ycp ycy yii yio yip yir yob yoc yoi yoo yop yor yoy ypo yrc yro yrp yyb yyc yyy