-ic b-p bbb bbc bbe bbi bbm bbo bbp bbt bcb bcc bce bci bcm bco bcp bct be- beb bec bee bei bem beo bep bet bi- bib bic bie bii bim bio bip bit bmb bmc bme bmi bmm bmo bmp bmt bob boc boe boi bom boo bop bot bpb bpc bpe bpi bpm bpo bpp bpt btb btc bte bti btm bto btp btt c-- cbb cbc cbe cbi cbm cbo cbp cbt ccb ccc cce cci ccm cco ccp cct ce- ceb cec cee cei cem ceo cep cet ci- cib cic cie cii cim cio cip cit cmb cmc cme cmi cmm cmo cmp cmt co- cob coc coe coi com coo cop cot cpb cpc cpe cpi cpm cpo cpp cpt ctb ctc cte cti ctm cto ctp ctt ebb ebc ebe ebi ebm ebo ebp ebt ec- ecb ecc ece eci ecm eco ect eeb eec eee eem eeo eep eet eib eic eie eii eim eio eip eit em- emb emc eme emi emm emo emp emt eo- eob eoc eoe eoi eom eoo eop eot ep- epb epc epe epi epm epo epp ept etb etc ete eti etm eto etp ett ibb ibc ibe ibi ibm ibo ibp ibt icb icc ice ici icm ico icp ict ie- iec iee iei iem iep iet iib iic iie iii iim iio iip iit im- imb imc ime imi imm imo imp imt io- iob ioc ioe ioi iom ioo iop iot ipb ipc ipe ipi ipm ipo ipp ipt itb itc ite iti itm ito itp itt m-o mbb mbc mbe mbi mbm mbo mbp mbt mc- mcb mcc mce mci mcm mco mcp mct meb mec mee mei mem meo mep met mi- mib mic mie mii mim mio mip mit mmb mmc mme mmi mmm mmo mmp mmt mob moc moe moi mom moo mop mot mpb mpc mpe mpi mpm mpo mpp mpt mtb mtc mte mti mtm mto mtp mtt o-i ob- obb obc obe obi obm obo obp obt oc- ocb occ oci ocm oco ocp oct oeb oec oee oei oem oeo oep oet oib oic oie oii oim oio oip oit om- omb omc ome omi omm omo omp omt oo- oob ooc ooi oom ooo oop oot op- opb opc ope opi opm opo opp opt ot- otb otc ote oti otm oto otp ott p-p pbb pbc pbe pbi pbm pbo pbp pbt pcb pcc pce pci pcm pco pcp pct peb pec pee pei pem peo pep pet pib pic pie pii pim pio pip pit pmb pmc pme pmi pmm pmo pmp pmt pob poc poe poi pom poo pop pot ppb ppc ppe ppi ppm ppo ppp ppt pt- ptb ptc pte pti ptm pto ptp ptt tbb tbc tbe tbi tbm tbo tbp tbt tcb tcc tce tci tcm tco tcp tct te- teb tec tee tei tem teo tep tet tib tic tie tii tim tio tip tit tmb tmc tme tmi tmm tmo tmp tmt to- tob toc toe toi tom too top tot tpb tpc tpe tpi tpm tpo tpp tpt ttb ttc tte tti ttm tto ttp ttt