-er -ic b-u bbb bbc bbe bbg bbi bbm bbn bbr bbu bcb bcc bce bcg bci bcm bcn bcr bcu be- beb bec bee beg bei bem ben ber beu bgb bgc bge bgg bgi bgm bgn bgr bgu bi- bib bic bie big bii bim bin bir biu bmb bmc bme bmg bmi bmm bmn bmr bmu bnb bnc bne bng bni bnn bnr bnu brb bre brg bri brm brn brr bru bub buc bue bug bui bum bun bur buu c-- cbb cbc cbe cbg cbi cbm cbn cbr cbu ccb ccc cce ccg cci ccm ccn ccr ccu ce- ceb cec cee ceg cei cem cen cer ceu cgb cgc cge cgg cgi cgm cgn cgr cgu ci- cib cic cie cig cii cim cin cir ciu cmb cmc cme cmg cmi cmm cmn cmr cmu cn- cnb cnc cne cng cni cnm cnn cnr cnu crb crc cre crg cri crm crn crr cru cub cuc cue cug cui cum cun cur cuu ebb ebc ebe ebg ebi ebm ebn ebr ebu ec- ecb ecc ece ecg eci ecm ecn ecr ecu eeb eec eee eeg eem een eer egb egc ege egg egi egm egn egr egu eib eic eie eig eii eim ein eir eiu em- emb emc eme emg emi emm emn emr emu en- enb enc ene eng eni enm enn enr enu erb erc ere erg eri erm ern err eru eu- eub euc eue eug eui eun eur gbc gbe gbg gbi gbm gbn gbr gbu gcb gcc gce gcg gci gcm gcn gcr gcu ge- geb gec gee geg gei gem gen ger geu ggb ggc ggg ggi ggm ggn ggr ggu gib gic gie gig gii gim gin gir giu gmb gmc gme gmg gmi gmm gmn gmr gnb gnc gne gni gnm gnn gnr gnu grb grc gre grg gri grm grn grr gru gu- gub guc gue gug gui gum gun gur guu ibb ibc ibe ibg ibi ibm ibn ibr ibu icb icc ice icg ici icm icn icr icu ie- iec iee ieg iei iem ien ier igb igc ige igg igi igm ign igr igu iib iic iie iii iim iin iir iiu im- imb imc ime img imi imm imn imu in- inb inc ine ing ini inm inn inr inu ir- irb irc ire irg iri irm irn irr iru iu- iub iuc iue iug iui ium iur m-r mbb mbc mbe mbg mbi mbm mbr mbu mc- mcb mcc mce mcg mci mcm mcn mcr mcu meb mec mee meg mei mem men mer meu mgb mgc mge mgi mgm mgn mgr mgu mi- mib mic mie mig mii mim min mir miu mmb mmc mme mmg mmi mmm mmn mmr mmu mnb mnc mne mng mni mnm mnn mnr mnu mrb mrc mre mrg mri mrm mrn mrr mru mub muc mue mug mui mum mun mur muu n-i nbb nbc nbe nbg nbi nbm nbn nbr nbu ncb ncc nce ncg nci ncm ncn ncr ncu ne- neb nec nee neg nei nem nen ner neu ngb ngc nge ngg ngi ngm ngn ngu nib nic nie nig nii nim nin nir niu nmb nmc nme nmg nmi nmm nmn nmr nmu nnb nnc nne nng nni nnm nnn nnu nrb nrc nre nrg nri nrm nrn nrr nru nub nuc nue nug nui num nun nur nuu rbb rbc rbe rbg rbi rbm rbn rbr rbu rcb rcc rce rcg rci rcm rcn rcr rcu re- reb rec ree reg rei rem ren rer reu rgb rgc rge rgg rgi rgn rgr rib ric rie rig rii rim rin rir rmb rmc rme rmg rmi rmm rmn rmr rnb rnc rng rni rnm rnn rnr rnu rrb rrc rrg rri rrm rrn rrr rru rub ruc rue rug rui rum run rur ruu ubb ubc ube ubg ubi ubn ubr ubu ucb ucc uce ucg uci ucm ucn ucr ucu ueb uec uee ueg uei uem uen uer ugb ugc uge ugg ugi ugm ugn ugr ugu uib uic uie uig uii uim uin uir uiu um- umb umc ume umg umi umm umn umr umu un- unb unc une ung uni unm unn unr unu ur- urb urc ure urg uri urm urn urr uru uuc uue uug uum uun uur uuu