b-u bbb bbg bbi bbm bbn bbr bbt bbu bgb bgg bgi bgm bgn bgr bgt bgu bi- bib big bii bim bin bir bit biu bmb bmg bmi bmm bmn bmr bmt bmu bnb bng bni bnn bnr bnt bnu brb brg bri brm brn brr brt bru btb btg bti btm btn btr btt btu bub bug bui bum bun bur but buu gbg gbi gbm gbn gbr gbt gbu ggb ggg ggi ggm ggn ggr ggt ggu gib gig gii gim gin gir git giu gmb gmg gmi gmm gmn gmr gmt gnb gni gnm gnn gnr gnt gnu grb grg gri grm grn grr grt gru gtb gtg gti gtm gtn gtr gtt gtu gu- gub gug gui gum gun gur gut guu ibb ibg ibi ibm ibn ibr ibt ibu igb igg igi igm ign igr igt igu iib iii iim iin iir iit iiu im- imb img imi imm imn imt imu in- inb ing ini inm inn inr int inu ir- irb irg iri irm irn irr irt iru itb itg iti itm itn itt itu iu- iub iug iui ium iur iut m-r mbb mbg mbi mbm mbr mbt mbu mgb mgi mgm mgn mgr mgt mgu mi- mib mig mii mim min mir mit miu mmb mmg mmi mmm mmn mmr mmt mmu mnb mng mni mnm mnn mnr mnt mnu mrb mrg mri mrm mrn mrr mrt mru mtb mtg mti mtm mtn mtr mtt mtu mub mug mui mum mun mur mut muu n-i nbb nbg nbi nbm nbn nbr nbt nbu ngb ngg ngi ngm ngn ngt ngu nib nig nii nim nin nir nit niu nmb nmg nmi nmm nmn nmr nmt nmu nnb nng nni nnm nnn nnt nnu nrb nrg nri nrm nrn nrr nrt nru ntb ntg nti ntm ntn ntr ntt ntu nub nug nui num nun nur nut nuu rbb rbg rbi rbm rbn rbr rbt rbu rgb rgg rgi rgn rgr rgt rib rig rii rim rin rir rit rmb rmg rmi rmm rmn rmr rmt rnb rng rni rnm rnn rnr rnt rnu rrb rrg rri rrm rrn rrr rrt rru rtb rtg rti rtm rtn rtr rtt rtu rub rug rui rum run rur rut ruu tbb tbg tbi tbm tbn tbr tbt tbu tgb tgg tgi tgm tgn tgr tgt tgu tib tig tii tim tin tir tit tiu tmb tmg tmi tmm tmn tmr tmt tmu tnb tng tni tnm tnn tnr tnt trb trg tri trm trn trr trt tru ttb ttg tti ttm ttn ttr ttt ttu tub tug tui tum tun tur tut tuu ubb ubg ubi ubn ubr ubt ubu ugb ugg ugi ugm ugn ugr ugt ugu uib uig uii uim uin uir uit uiu um- umb umg umi umm umn umr umt umu un- unb ung uni unm unn unr unt unu ur- urb urg uri urm urn urr urt uru utb uti utm utn utr utt utu uug uum uun uur uut uuu