-er -ic b-u bbb bbc bbe bbi bbl bbq bbr bbu bcb bcc bce bci bcl bcq bcr bcu be- beb bec bee bei bel beq ber beu bi- bib bic bie bii bil bir biu blb blc ble bli bll blq blr blu bqc bqe brb bre bri brl brq brr bru bub buc bue bui bul bur buu c-- cbb cbc cbe cbi cbl cbq cbr cbu ccb ccc cce cci ccl ccr ccu ce- ceb cec cee cei cel ceq cer ceu ci- cib cic cie cii cil ciq cir ciu cl- clb clc cle cli cll clr clu cqb cqc cqi cql crb crc cre cri crl crq crr cru cub cuc cue cui cul cuq cur cuu ebb ebc ebe ebi ebl ebq ebr ebu ec- ecb ecc ece eci ecl ecq ecr ecu eeb eec eee eel eer eib eic eie eii eil eir eiu elb elc ele eli ell elr elu eqe eqq equ erb erc ere eri erl erq err eru eu- eub euc eue eui eul eur ibb ibc ibe ibi ibl ibr ibu icb icc ice ici icl icq icr icu ie- iec iee iei iel ier iib iic iie iii iil iir iiu il- ilb ilc ile ili ill ilq ilr ilu iqc iqe iqu ir- irb irc ire iri irl irq irr iru iu- iub iuc iue iui iur lbb lbc lbe lbi lbl lbr lbu lcb lcc lce lci lcl lcq lcr lcu leb lec lee lei lel leq ler leu lib lic lie lii lil liq lir liu llb llc lle lli lll llq llr llu lqr lrb lrc lri lrr lru lub luc lue lui lul lur luu qbc qbe qbq qcc qci qcl qec qee qic qie qil qir qiu qqq qqu qrb qrc qre qri qrl qru qu- que qui qul qur rbb rbc rbe rbi rbl rbr rbu rcb rcc rce rci rcl rcr rcu re- reb rec ree rei rel req rer reu rib ric rie rii ril riq rir rlc rle rli rll rlr rlu rqc rrb rrc rri rrl rrq rrr rru rub ruc rue rui rur ruu ubb ubc ube ubi ubl ubr ubu ucb ucc uce uci ucl ucr ucu ueb uec uee uei uel uer uib uic uie uii uil uiq uir uiu ulb ulc ule uli ull ulr ulu ur- urb urc ure uri url urr uru uuc uue uur uuu