-er -ic b-u bbb bbc bbe bbf bbi bbo bbq bbr bbu bcb bcc bce bcf bci bco bcq bcr bcu be- beb bec bee bef bei beo beq ber beu bfb bfc bfe bff bfi bfo bfq bfr bfu bi- bib bic bie bif bii bio bir biu bob boc boe bof boi boo boq bor bou bqc bqe brb bre brf bri bro brq brr bru bub buc bue buf bui buo bur buu c-- cbb cbc cbe cbf cbi cbo cbq cbr cbu ccb ccc cce ccf cci cco ccr ccu ce- ceb cec cee cef cei ceo ceq cer ceu cfb cfc cfe cff cfi cfo cfq cfr cfu ci- cib cic cie cif cii cio ciq cir ciu co- cob coc coe cof coi coo coq cor cou cqb cqc cqf cqi cqo crb crc cre crf cri cro crq crr cru cub cuc cue cuf cui cuo cuq cur cuu ebb ebc ebe ebf ebi ebo ebq ebr ebu ec- ecb ecc ece ecf eci eco ecq ecr ecu eeb eec eee eef eeo eer ef- efb efc efe eff efi efo efr eib eic eie eif eii eio eir eiu eo- eob eoc eoe eof eoi eoo eoq eor eou eqe eqf eqq equ erb erc ere erf eri ero erq err eru eu- eub euc eue euf eui eur fbb fbc fbe fbf fbi fbo fbr fbu fcb fcc fce fcf fci fco fcr fcu feb fec fee fef fei feo fer feu ffc ffe fff ffi ffo ffr ffu fib fic fie fif fii fiq fir fiu fob foc foe fof foi foo for fou frb frc fre frf fri fro frq frr fru fub fue fuf fui fuo fur fuu i-f ibb ibc ibe ibf ibi ibo ibr ibu icb icc ice icf ici ico icq icr icu ie- iec iee ief iei ier ifb ifc ife iff ifi ifo ifr ifu iib iic iie iif iii iio iir iiu io- iob ioc ioe iof ioi ioo ior iou iqc iqe iqu ir- irb irc ire irf iri iro irq irr iru iu- iub iuc iue iui iur o-i ob- obb obc obe obf obi obo obr obu oc- ocb occ ocf oci oco ocr ocu oeb oec oee oef oei oeo oer of- ofb ofc ofe off ofi ofo ofr ofu oib oic oie oif oii oio oir oiu oo- oob ooc oof ooi ooo oor oqb oqo or- orb orc ore orf ori oro orr oru ou- ouc oue ouf oui ouo our qbc qbe qbq qcc qci qco qec qee qef qeo qfb qfc qfe qff qfi qic qie qio qir qiu qof qoi qoo qor qqq qqu qrb qrc qre qri qru qu- que qui quo qur rbb rbc rbe rbf rbi rbo rbr rbu rcb rcc rce rcf rci rco rcr rcu re- reb rec ree ref rei reo req rer reu rfb rfc rfe rff rfi rfo rfq rfr rfu rib ric rie rif rii rio riq rir rob roc roe rof roi roo ror rou rqc rrb rrc rrf rri rrq rrr rru rub ruc rue ruf rui ruo rur ruu ubb ubc ube ubf ubi ubo ubr ubu ucb ucc uce ucf uci uco ucr ucu ueb uec uee uef uei uer ufc ufe uff ufi ufo ufr ufu uib uic uie uif uii uio uiq uir uiu uob uoc uoe uoo uor ur- urb urc ure urf uri uro urr uru uuc uue uur uuu