-er -ic b-u bbb bbc bbe bbg bbi bbo bbq bbr bbu bcb bcc bce bcg bci bco bcq bcr bcu be- beb bec bee beg bei beo beq ber beu bgb bgc bge bgg bgi bgo bgr bgu bi- bib bic bie big bii bio bir biu bob boc boe bog boi boo boq bor bou bqc bqe brb bre brg bri bro brq brr bru bub buc bue bug bui buo bur buu c-- cbb cbc cbe cbg cbi cbo cbq cbr cbu ccb ccc cce ccg cci cco ccr ccu ce- ceb cec cee ceg cei ceo ceq cer ceu cgb cgc cge cgg cgi cgo cgr cgu ci- cib cic cie cig cii cio ciq cir ciu co- cob coc coe cog coi coo coq cor cou cqb cqc cqg cqi cqo crb crc cre crg cri cro crq crr cru cub cuc cue cug cui cuo cuq cur cuu ebb ebc ebe ebg ebi ebo ebq ebr ebu ec- ecb ecc ece ecg eci eco ecq ecr ecu eeb eec eee eeg eeo eer egb egc ege egg egi ego egr egu eib eic eie eig eii eio eir eiu eo- eob eoc eoe eog eoi eoo eoq eor eou eqe eqq equ erb erc ere erg eri ero erq err eru eu- eub euc eue eug eui eur gbc gbe gbg gbi gbo gbr gbu gcb gcc gce gcg gci gco gcr gcu ge- geb gec gee geg gei geo ger geu ggb ggc ggg ggi ggo ggr ggu gib gic gie gig gii gio gir giu gob goc goe gog goi goo goq gor gou grb grc gre grg gri gro grq grr gru gu- gub guc gue gug gui guo gur guu ibb ibc ibe ibg ibi ibo ibr ibu icb icc ice icg ici ico icq icr icu ie- iec iee ieg iei ier igb igc ige igg igi igo igr igu iib iic iie iii iio iir iiu io- iob ioc ioe iog ioi ioo ior iou iqc iqe iqu ir- irb irc ire irg iri iro irq irr iru iu- iub iuc iue iug iui iur o-i ob- obb obc obe obg obi obo obr obu oc- ocb occ ocg oci oco ocr ocu oeb oec oee oeg oei oeo oer ogc oge ogg ogi ogo oib oic oie oii oio oir oiu oo- oob ooc oog ooi ooo oor oqb oqo or- orb orc ore org ori oro orr oru ou- ouc oue oui ouo our qbc qbe qbq qcc qci qco qec qee qeo qgc qic qie qio qir qiu qoi qoo qor qqq qqu qrb qrc qre qrg qri qru qu- que qui quo qur rbb rbc rbe rbg rbi rbo rbr rbu rcb rcc rce rcg rci rco rcr rcu re- reb rec ree reg rei reo req rer reu rgb rgc rge rgg rgi rgo rgr rib ric rie rig rii rio riq rir rob roc roe rog roi roo ror rou rqc rrb rrc rrg rri rrq rrr rru rub ruc rue rug rui ruo rur ruu ubb ubc ube ubg ubi ubo ubr ubu ucb ucc uce ucg uci uco ucr ucu ueb uec uee ueg uei uer ugb ugc uge ugg ugi ugo ugr ugu uib uic uie uig uii uio uiq uir uiu uob uoc uoe uog uoo uor ur- urb urc ure urg uri uro urr uru uuc uue uug uur uuu