-er -ic bbb bbc bbe bbi bbl bbr bcb bcc bce bci bcl bcr bcv be- beb bec bee bei bel ber bev bi- bib bic bie bii bil bir biv blb blc ble bli bll blr blv brb bre bri brl brr brv bvb bvc bve bvi bvl bvr bvv c-- cbb cbc cbe cbi cbl cbr cbv ccb ccc cce cci ccl ccr ccv ce- ceb cec cee cei cel cer cev ci- cib cic cie cii cil cir civ cl- clb clc cle cli cll clr clv crb crc cre cri crl crr crv cvb cvc cve cvi cvl cvr cvv ebb ebc ebe ebi ebl ebr ebv ec- ecb ecc ece eci ecl ecr ecv eeb eec eee eel eer eev eib eic eie eii eil eir eiv elb elc ele eli ell elr elv erb erc ere eri erl err erv evb evc eve evi evl evr evv i-v ibb ibc ibe ibi ibl ibr ibv icb icc ice ici icl icr icv ie- iec iee iei iel ier iev iib iic iie iii iil iir il- ilb ilc ile ili ill ilr ilv ir- irb irc ire iri irl irr irv ivb ivc ive ivi ivl ivr ivv lbb lbc lbe lbi lbl lbr lbv lcb lcc lce lci lcl lcr lcv leb lec lee lei lel ler lev lib lic lie lii lil lir liv llb llc lle lli lll llr llv lrb lrc lri lrr lrv lvb lvc lve lvi lvl lvr lvv rbb rbc rbe rbi rbl rbr rcb rcc rce rci rcl rcr rcv re- reb rec ree rei rel rer rev rib ric rie rii ril rir riv rlc rle rli rll rlr rrb rrc rri rrl rrr rvb rvc rve rvi rvl rvr rvv v-e vbc vbi vbl vbr vbv vcc vce vci vcl vcr veb vec vee vei vel ver vi- vib vic vie vii vil vir viv vl- vlb vlc vle vll vlv vrb vrc vre vri vrr vvb vvc vvi vvr vvv