-er -ic -ol bbb bbc bbe bbi bbl bbo bbr bcb bcc bce bci bcl bco bcr bcv be- beb bec bee bei bel beo ber bev bi- bib bic bie bii bil bio bir biv blb blc ble bli bll blo blr blv bob boc boe boi bol boo bor bov brb bre bri brl bro brr brv bvb bvc bve bvi bvl bvo bvr bvv c-- cbb cbc cbe cbi cbl cbo cbr cbv ccb ccc cce cci ccl cco ccr ccv ce- ceb cec cee cei cel ceo cer cev ci- cib cic cie cii cil cio cir civ cl- clb clc cle cli cll clo clr clv co- cob coc coe coi col coo cor cov crb crc cre cri crl cro crr crv cvb cvc cve cvi cvl cvo cvr cvv ebb ebc ebe ebi ebl ebo ebr ebv ec- ecb ecc ece eci ecl eco ecr ecv eeb eec eee eel eeo eer eev eib eic eie eii eil eio eir eiv elb elc ele eli ell elo elr elv eo- eob eoc eoe eoi eol eoo eor erb erc ere eri erl ero err erv evb evc eve evi evl evo evr evv i-v ibb ibc ibe ibi ibl ibo ibr ibv icb icc ice ici icl ico icr icv ie- iec iee iei iel ier iev iib iic iie iii iil iio iir il- ilb ilc ile ili ill ilo ilr ilv io- iob ioc ioe ioi iol ioo ior iov ir- irb irc ire iri irl iro irr irv ivb ivc ive ivi ivl ivo ivr ivv lbb lbc lbe lbi lbl lbo lbr lbv lcb lcc lce lci lcl lco lcr lcv leb lec lee lei lel leo ler lev lib lic lie lii lil lio lir liv llb llc lle lli lll llo llr llv lob loc loe loi lol loo lor lov lrb lrc lri lro lrr lrv lvb lvc lve lvi lvl lvr lvv o-i ob- obb obc obe obi obl obo obr obv oc- ocb occ oci ocl oco ocr ocv oeb oec oee oei oel oeo oer oib oic oie oii oil oio oir oiv olb olc ole oli oll olo oo- oob ooc ooi ool ooo oor oov or- orb orc ore ori orl oro orr orv ov- ovb ovc ove ovi ovl ovo ovv rbb rbc rbe rbi rbl rbo rbr rcb rcc rce rci rcl rco rcr rcv re- reb rec ree rei rel reo rer rev rib ric rie rii ril rio rir riv rlc rle rli rll rlo rlr rob roc roe roi rol roo ror rov rrb rrc rri rrl rrr rvb rvc rve rvi rvl rvo rvr rvv v-e vbc vbi vbl vbo vbr vbv vcc vce vci vcl vco vcr veb vec vee vei vel veo ver vi- vib vic vie vii vil vio vir viv vl- vlb vlc vle vll vlo vlv vob voc voe voi vol voo vor vov vrb vrc vre vri vrr vvb vvc vvi vvo vvr vvv