-ic b-p bbb bbc bbe bbh bbi bbo bbp bbx bcb bcc bce bch bci bco bcp bcx be- beb bec bee beh bei beo bep bex bhb bhc bhe bhh bhi bho bhp bhx bi- bib bic bie bih bii bio bip bix bob boc boe boh boi boo bop box bpb bpc bpe bph bpi bpo bpp bpx bxb bxi bxo bxx c-- cbb cbc cbe cbh cbi cbo cbp cbx ccb ccc cce cch cci cco ccp ccx ce- ceb cec cee ceh cei ceo cep cex ch- chb chc che chh chi cho chp chx ci- cib cic cie cih cii cio cip cix co- cob coc coe coh coi coo cop cox cpb cpc cpe cph cpi cpo cpp cpx cxc cxh cxi cxo cxp cxx ebb ebc ebe ebh ebi ebo ebp ebx ec- ecb ecc ece ech eci eco ecx eeb eec eee eeo eep eex ehb ehc ehe ehh ehi eho ehp eib eic eie eii eio eip eix eo- eob eoc eoe eoh eoi eoo eop ep- epb epc epe eph epi epo epp epx ex- exc exe exh exi exo exp exx h-i hbb hbc hbe hbh hbi hbo hbp hbx hcb hcc hce hch hci hco hcp he- heb hec hee heh hei heo hep hex hhb hhc hhe hhh hhi hho hhp hib hic hie hih hii hio hip hix hob hoc hoe hoh hoi hoo hop hox hpb hpc hpe hph hpi hpo hpp hxc ibb ibc ibe ibh ibi ibo ibp ibx icb icc ice ich ici ico icp ie- iec iee iei iep iex ihb ihc ihe ihh ihi iho ihp iib iic iie iih iii iio iip iix io- iob ioc ioe ioh ioi ioo iop ipb ipc ipe ipi ipo ipp ipx ixc ixe ixi o-i ob- obb obc obe obh obi obo obp obx oc- ocb occ och oci oco ocp ocx oeb oec oee oeh oei oeo oep oex ohc ohe ohh ohi oho ohp oib oic oie oii oio oip oo- oob ooc ooh ooi ooo oop oox op- opb opc ope oph opi opo opp opx ox- oxb oxc oxi oxo oxx p-p pbb pbc pbe pbi pbo pbp pbx pcb pcc pce pch pci pco pcp pcx peb pec pee peh pei peo pep pex phb phc phe phi pho php phx pib pic pie pih pii pio pip pix pob poc poe poh poi poo pop pox ppb ppc ppe pph ppi ppo ppp ppx pxc pxe xbc xbe xbx xcb xch xci xcp xcx xee xep xex xhp xic xie xii xio xix xoc xoi xoo xop xox xpb xpc xpe xpo xpp xxi xxo xxp xxx