bbb bbg bbi bbn bbo bbr bbt bgb bgg bgi bgn bgo bgr bgt bgz bi- bib big bii bin bio bir bit biz bnb bng bni bnn bno bnr bnt bnz bob bog boi bon boo bor bot boz brb brg bri brn bro brr brt brz btb btg bti btn bto btr btt btz bzn bzo bzr bzz gbg gbi gbn gbo gbr gbt gbz ggb ggg ggi ggn ggo ggr ggt ggz gib gig gii gin gio gir git giz gnb gni gnn gno gnr gnt gob gog goi gon goo gor got goz grb grg gri grn gro grr grt gtb gtg gti gtn gto gtr gtt gzo gzr ibb ibg ibi ibn ibo ibr ibt ibz igb igg igi ign igo igr igt iib iii iin iio iir iit in- inb ing ini inn ino inr int io- iob iog ioi ion ioo ior iot ir- irb irg iri irn iro irr irt itb itg iti itn ito itt itz izi izo izz n-i nbb nbg nbi nbn nbo nbr nbt ngb ngg ngi ngn ngo ngt nib nig nii nin nio nir nit niz nnb nng nni nnn nno nnt nnz no- nob nog noi non noo nor not noz nrb nrg nri nrn nro nrr nrt nrz ntb ntg nti ntn nto ntr ntt ntz nzb nzg nzi nzo nzz o-i ob- obb obg obi obn obo obr obt ogg ogi ogn ogo ogt oib oii oin oio oir oit oiz on- onb ong oni onn ono onr ont oo- oob oog ooi oon ooo oor oot or- orb org ori orn oro orr ort orz ot- otb otg oti otn oto otr ott otz ozo ozt ozz rbb rbg rbi rbn rbo rbr rbt rgb rgg rgi rgn rgo rgr rgt rib rig rii rin rio rir rit riz rnb rng rni rnn rno rnr rnt rnz rob rog roi ron roo ror rot roz rrb rrg rri rrn rrr rrt rtb rtg rti rtn rto rtr rtt rtz rzb rzo tbb tbg tbi tbn tbo tbr tbt tbz tgb tgg tgi tgn tgo tgr tgt tgz tib tig tii tin tio tir tit tiz tnb tng tni tnn tno tnr tnt tnz to- tob tog toi ton too tor tot toz trb trg tri trn tro trr trt trz ttb ttg tti ttn tto ttr ttt z-g zbb zbr zbt zgb zgg zgi zib zig zin zio zir zit ziz znn zno zo- zob zog zoi zon zoo zor zot zro ztr zzr zzt zzz