-ic -ol b-u bbb bbc bbg bbi bbk bbl bbn bbo bbr bbu bcb bcc bcg bci bck bcl bcn bco bcr bcu bgb bgc bgg bgi bgk bgl bgn bgo bgr bgu bi- bib bic big bii bik bil bin bio bir biu bkb bkc bkg bkk bkl bkn bko bkr blb blc blg bli blk bll bln blo blr blu bnb bnc bng bni bnk bnl bnn bno bnr bnu bob boc bog boi bok bol bon boo bor bou brb brg bri brk brl brn bro brr bru bub buc bug bui buk bul bun buo bur buu c-- cbb cbc cbg cbi cbk cbl cbn cbo cbr cbu ccb ccc ccg cci cck ccl ccn cco ccr ccu cgb cgc cgg cgi cgl cgn cgo cgr cgu ci- cib cic cig cii cik cil cin cio cir ciu ckb ckc cki cko cl- clb clc clg cli clk cll cln clo clr clu cn- cnb cnc cng cni cnl cnn cno cnr cnu co- cob coc cog coi cok col con coo cor cou crb crc crg cri crk crl crn cro crr cru cub cuc cug cui cuk cul cun cuo cur cuu gbc gbg gbi gbk gbl gbn gbo gbr gbu gcb gcc gcg gci gck gcl gcn gco gcr gcu ggb ggc ggg ggi ggn ggo ggr ggu gib gic gig gii gik gil gin gio gir giu gkb gkn gko glb glc glg gli glk gll gln glo glr glu gnb gnc gni gnl gnn gno gnr gnu gob goc gog goi gok gol gon goo gor gou grb grc grg gri grk grl grn gro grr gru gu- gub guc gug gui guk gul gun guo gur guu ibb ibc ibg ibi ibk ibl ibn ibo ibr ibu icb icc icg ici ick icl icn ico icr icu igb igc igg igi igk igl ign igo igr igu iib iic iii iil iin iio iir iiu ikb ikc iki ikk ikl iko ikr iku il- ilb ilc ilg ili ilk ill iln ilo ilr ilu in- inb inc ing ini ink inl inn ino inr inu io- iob ioc iog ioi iol ion ioo ior iou ir- irb irc irg iri irk irl irn iro irr iru iu- iub iuc iug iui iur kbb kbc kbi kbk kbl kbn kbo kbr kbu kcb kcc kcg kci kck kcl kcn kcr kcu kgb kgc kgi kgl kgo kgu kib kic kig kii kik kil kin kio kir kiu kkb kkc kki kkk kkl kkn kkr kku kl- klb klc klg kli klo klr klu kn- knc kng kni knk knl knn kno knr knu kob koc kog koi kok kol kon koo kor kou krc krg kri krk krl krn kro krr kru kub kuc kug kui kuk kul kun kur kuu lbb lbc lbg lbi lbk lbl lbo lbr lbu lcb lcc lcg lci lck lcl lcn lco lcr lcu lgb lgc lgg lgi lgk lgl lgn lgo lgr lgu lib lic lig lii lik lil lin lio lir liu lkb lkg lkl lkr llb llc llg lli llk lll lln llo llr llu lnb lnc lng lni lnk lnl lnn lno lnr lnu lob loc log loi lok lol lon loo lor lou lrb lrc lrg lri lrk lrn lro lrr lru lub luc lug lui luk lul lun luo lur luu n-i nbb nbc nbg nbi nbk nbl nbn nbo nbr nbu ncb ncc ncg nci nck ncl ncn nco ncr ncu ngb ngc ngg ngi ngk ngl ngn ngo ngu nib nic nig nii nik nil nin nio nir niu nkc nki nkk nkn nko nkr nku nlb nlc nlg nli nlk nll nln nlo nlr nlu nnb nnc nng nni nnk nnl nnn nno nnu no- nob noc nog noi nok nol non noo nor nou nrb nrc nrg nri nrk nrl nrn nro nrr nru nub nuc nug nui nuk nul nun nuo nur nuu o-i ob- obb obc obg obi obk obl obn obo obr obu oc- ocb occ ocg oci ock ocl ocn oco ocr ocu ogc ogg ogi ogl ogn ogo oib oic oii oik oil oin oio oir oiu okb okc okg oki okk okl oko okr oku olb olc olg oli olk oll oln olo olu on- onb onc ong oni onk onl onn ono onr onu oo- oob ooc oog ooi ook ool oon ooo oor or- orb orc org ori ork orl orn oro orr oru ou- ouc oui ouk oul oun ouo our rbb rbc rbg rbi rbk rbl rbn rbo rbr rbu rcb rcc rcg rci rcl rcn rco rcr rcu rgb rgc rgg rgi rgk rgn rgo rgr rib ric rig rii rik ril rin rio rir rkb rkc rkg rkk rko rku rlc rlg rli rll rln rlo rlr rlu rnb rnc rng rni rnn rno rnr rnu rob roc rog roi rok rol ron roo ror rou rrb rrc rrg rri rrk rrl rrn rrr rru rub ruc rug rui ruk run ruo rur ruu ubb ubc ubg ubi ubk ubl ubn ubo ubr ubu ucb ucc ucg uci uck ucl ucn uco ucr ucu ugb ugc ugg ugi ugk ugl ugn ugo ugr ugu uib uic uig uii uil uin uio uir uiu ukb ukc uki ukk ukl ukn ukr uku ulb ulc ulg uli ulk ull uln ulo ulr ulu un- unb unc ung uni unk unl unn uno unr unu uob uoc uog uok uol uon uoo uor ur- urb urc urg uri urk url urn uro urr uru uuc uug uun uur uuu