b-u bbb bbg bbh bbm bbo bbr bbu bgb bgg bgh bgm bgo bgr bgu bhb bhg bhh bhm bho bhr bhu bmb bmg bmh bmm bmo bmr bmu bob bog boh bom boo bor bou brb brg brh brm bro brr bru bub bug buh bum buo bur buu gbg gbh gbm gbo gbr gbu ggb ggg ggh ggm ggo ggr ggu ghb ghg ghh gho ghr gmb gmg gmh gmm gmo gmr gob gog goh gom goo gor gou grb grg grh grm gro grr gru gu- gub gug gum guo gur guu hbb hbg hbh hbm hbo hbr hbu hgb hgg hgh hgm hgo hgr hgu hhb hhg hhh hhm hho hhr hhu hmb hmg hmh hmm hmo hmr hmu hob hog hoh hom hoo hor hou hr- hrb hrg hrh hrm hro hrr hru hub hug huh hum huo hur huu m-o m-r mbb mbg mbh mbm mbo mbr mbu mgb mgh mgm mgo mgr mgu mhg mhh mhm mho mhr mhu mmb mmg mmh mmm mmo mmr mmu mob mog moh mom moo mor mou mrb mrg mrh mrm mro mrr mru mub mug muh mum mur muu ob- obb obg obh obm obo obr obu ogg ogh ogo ohg ohh ohm oho ohr ohu om- omb omg omh omm omo omr omu oo- oob oog ooh oom ooo oor or- orb org orh orm oro orr oru ou- ouh oum ouo our rbb rbg rbh rbm rbo rbr rbu rgb rgg rgh rgo rgr rh- rhb rhg rhh rhm rho rhr rhu rmb rmg rmh rmm rmo rmr rob rog roh rom roo ror rou rrb rrg rrh rrm rrr rru rub rug ruh rum ruo rur ruu ubb ubg ubh ubo ubr ubu ugb ugg ugh ugm ugo ugr ugu uhb uhh uhm uho uhr uhu um- umb umg umh umm umo umr umu uob uog uom uoo uor ur- urb urg urm uro urr uru uug uum uur uuu