b-u bbb bbc bbm bbn bbo bbs bbt bbu bby bcb bcc bcm bcn bco bcs bct bcu bcy bmb bmc bmm bmn bmo bms bmt bmu bnb bnc bnn bno bns bnt bnu bob boc bom bon boo bos bot bou boy bsb bsc bsm bsn bso bss bst bsu bsy btb btc btm btn bto bts btt btu bty bub buc bum bun buo bus but buu buy by- byc bym byn byo bys byt byu c-- cbb cbc cbm cbn cbo cbs cbt cbu cby ccb ccc ccm ccn cco ccs cct ccu cmb cmc cmm cmn cmo cms cmt cmu cmy cn- cnb cnc cnm cnn cno cns cnt cnu cny co- cob coc com con coo cos cot cou coy csb csc csm csn cso css cst csu csy ctb ctc ctm ctn cto cts ctt ctu cty cub cuc cum cun cuo cus cut cuu cuy cyb cyc cym cyn cyo cys cyt m-o mbb mbc mbm mbo mbs mbt mbu mc- mcb mcc mcm mcn mco mcs mct mcu mmb mmc mmm mmn mmo mms mmt mmu mnb mnc mnm mnn mno mns mnt mnu mob moc mom mon moo mos mot mou moy msb msc msm msn mso mss mst msu msy mtb mtc mtm mtn mto mts mtt mtu mub muc mum mun mus mut muu muy my- myb myc mym myn myo mys myt myu nbb nbc nbm nbn nbo nbs nbt nbu ncb ncc ncm ncn nco ncs nct ncu nmb nmc nmm nmn nmo nms nmt nmu nnb nnc nnm nnn nno nns nnt nnu no- nob noc nom non noo nos not nou noy nsb nsc nsm nsn nso nss nst nsu nsy ntb ntc ntm ntn nto nts ntt ntu nub nuc num nun nuo nus nut nuu nuy nyc nym nyn nyo nys nyt nyu nyy ob- obb obc obm obn obo obs obt obu oby oc- ocb occ ocm ocn oco ocs oct ocu om- omb omc omm omn omo oms omt omu omy on- onb onc onn ono ons ont onu ony oo- oob ooc oom oon ooo oos oot os- osb osc osm osn oso oss ost osu ot- otb otc otm otn oto ots ott otu ou- ouc oum oun ouo ous out oyo oys sbb sbc sbm sbn sbo sbs sbt sbu sby scb scc scm scn sco scs sct scu smb smc smm smn smo sms smt smu smy snb snc snm snn sno sns snt snu sny sob soc som son soo sos sot sou soy ss- ssb ssc ssm ssn sso sss sst ssu stb stc stm stn sto sts stt stu sty sub suc sum sun suo sus sut suu suy sy- syb syc sym syn sys syt syu tbb tbc tbm tbn tbo tbs tbt tbu tcb tcc tcm tcn tco tcs tct tcu tmb tmc tmm tmn tmo tms tmt tmu tmy tnb tnc tnm tnn tno tns tnt to- tob toc tom ton too tos tot tou toy tsb tsc tsm tsn tso tss tst tsu tsy ttb ttc ttm ttn tto tts ttt ttu tty tub tuc tum tun tuo tus tut tuu tuy tyc tym tyn tyo tys tyt ubb ubc ubn ubo ubs ubt ubu uby ucb ucc ucm ucn uco ucs uct ucu um- umb umc umm umn umo ums umt umu un- unb unc unm unn uno uns unt unu uny uob uoc uom uon uoo uos uot usb usc usm usn uso uss ust usu utb utc utm utn uto uts utt utu uty uuc uum uun uus uut uuu uyc uyo uys uyu ybc ybm ybs yby ycc yco ycs ycu ycy ymc ymm ymo yms ymt ynn yns ynu yny yob yoc yom yon yoo yos yot you yoy ysb ysc ysm yso yss yst ysu ysy ytc ytm ytn yto yts ytt ytu yum yun yuo yus yut yuu yuy yyb yyc yys yyt yyu yyy