-ic b-u bbb bbc bbg bbi bbk bbn bbo bbr bbu bcb bcc bcg bci bck bcn bco bcr bcu bgb bgc bgg bgi bgk bgn bgo bgr bgu bi- bib bic big bii bik bin bio bir biu bkb bkc bkg bkk bkn bko bkr bnb bnc bng bni bnk bnn bno bnr bnu bob boc bog boi bok bon boo bor bou brb brg bri brk brn bro brr bru bub buc bug bui buk bun buo bur buu c-- cbb cbc cbg cbi cbk cbn cbo cbr cbu ccb ccc ccg cci cck ccn cco ccr ccu cgb cgc cgg cgi cgn cgo cgr cgu ci- cib cic cig cii cik cin cio cir ciu ckb ckc cki cko cn- cnb cnc cng cni cnn cno cnr cnu co- cob coc cog coi cok con coo cor cou crb crc crg cri crk crn cro crr cru cub cuc cug cui cuk cun cuo cur cuu gbc gbg gbi gbk gbn gbo gbr gbu gcb gcc gcg gci gck gcn gco gcr gcu ggb ggc ggg ggi ggn ggo ggr ggu gib gic gig gii gik gin gio gir giu gkb gkn gko gnb gnc gni gnn gno gnr gnu gob goc gog goi gok gon goo gor gou grb grc grg gri grk grn gro grr gru gu- gub guc gug gui guk gun guo gur guu ibb ibc ibg ibi ibk ibn ibo ibr ibu icb icc icg ici ick icn ico icr icu igb igc igg igi igk ign igo igr igu iib iic iii iin iio iir iiu ikb ikc iki ikk iko ikr iku in- inb inc ing ini ink inn ino inr inu io- iob ioc iog ioi ion ioo ior iou ir- irb irc irg iri irk irn iro irr iru iu- iub iuc iug iui iur kbb kbc kbi kbk kbn kbo kbr kbu kcb kcc kcg kci kck kcn kcr kcu kgb kgc kgi kgo kgu kib kic kig kii kik kin kio kir kiu kkb kkc kki kkk kkn kkr kku kn- knc kng kni knk knn kno knr knu kob koc kog koi kok kon koo kor kou krc krg kri krk krn kro krr kru kub kuc kug kui kuk kun kur kuu n-i nbb nbc nbg nbi nbk nbn nbo nbr nbu ncb ncc ncg nci nck ncn nco ncr ncu ngb ngc ngg ngi ngk ngn ngo ngu nib nic nig nii nik nin nio nir niu nkc nki nkk nkn nko nkr nku nnb nnc nng nni nnk nnn nno nnu no- nob noc nog noi nok non noo nor nou nrb nrc nrg nri nrk nrn nro nrr nru nub nuc nug nui nuk nun nuo nur nuu o-i ob- obb obc obg obi obk obn obo obr obu oc- ocb occ ocg oci ock ocn oco ocr ocu ogc ogg ogi ogn ogo oib oic oii oik oin oio oir oiu okb okc okg oki okk oko okr oku on- onb onc ong oni onk onn ono onr onu oo- oob ooc oog ooi ook oon ooo oor or- orb orc org ori ork orn oro orr oru ou- ouc oui ouk oun ouo our rbb rbc rbg rbi rbk rbn rbo rbr rbu rcb rcc rcg rci rcn rco rcr rcu rgb rgc rgg rgi rgk rgn rgo rgr rib ric rig rii rik rin rio rir rkb rkc rkg rkk rko rku rnb rnc rng rni rnn rno rnr rnu rob roc rog roi rok ron roo ror rou rrb rrc rrg rri rrk rrn rrr rru rub ruc rug rui ruk run ruo rur ruu ubb ubc ubg ubi ubk ubn ubo ubr ubu ucb ucc ucg uci uck ucn uco ucr ucu ugb ugc ugg ugi ugk ugn ugo ugr ugu uib uic uig uii uin uio uir uiu ukb ukc uki ukk ukn ukr uku un- unb unc ung uni unk unn uno unr unu uob uoc uog uok uon uoo uor ur- urb urc urg uri urk urn uro urr uru uuc uug uun uur uuu