bbb bbi bbm bbo bbr bbs bbx bby bi- bib bii bim bio bir bis bix biy bmb bmi bmm bmo bmr bms bmx bob boi bom boo bor bos box boy brb bri brm bro brr brs brx bry bsb bsi bsm bso bsr bss bsx bsy bxb bxi bxm bxo bxx by- byi bym byo byr bys ibb ibi ibm ibo ibr ibs ibx iby iib iii iim iio iir iis iix im- imb imi imm imo ims imx imy io- iob ioi iom ioo ior ios ir- irb iri irm iro irr irs irx iry is- isb isi ism iso isr iss isy ixi ixy iym iyo iyr iys iyy m-o m-r mbb mbi mbm mbo mbr mbs mbx mi- mib mii mim mio mir mis mix miy mmb mmi mmm mmo mmr mms mmx mob moi mom moo mor mos mox moy mrb mri mrm mro mrr mrs mrx mry msb msi msm mso msr mss msx msy mxi mxr mxs my- myb mym myo myr mys myx o-i ob- obb obi obm obo obr obs obx oby oib oii oim oio oir ois om- omb omi omm omo omr oms omx omy oo- oob ooi oom ooo oor oos oox or- orb ori orm oro orr ors orx ory os- osb osi osm oso osr oss osx ox- oxb oxi oxo oxx oxy oyi oyo oys rbb rbi rbm rbo rbr rbs rbx rib rii rim rio rir ris rix riy rmb rmi rmm rmo rmr rms rmx rob roi rom roo ror ros rox roy rrb rri rrm rrr rrs rsb rsi rsm rso rsr rss rsx rxr rxs ry- rym ryo ryr rys ryy sbb sbi sbm sbo sbr sbs sbx sby sib sii sim sio sir sis six smb smi smm smo smr sms smx smy sob soi som soo sor sos sox soy sr- srb sri srm sro srr srs srx sry ss- ssb ssi ssm sso ssr sss ssx sxi sxm sxs sy- syb syi sym syr sys syx xbr xbx xii xio xis xix xmi xmm xmo xmr xms xmx xoi xom xoo xor xos xox xrx xry xsb xsi xsm xss xxi xxo xxx xxy xyr xyy ybi ybm ybr ybs yby yii yim yio yir yis ymi ymm ymo yms yob yoi yom yoo yor yos yox yoy yro yrs ysb ysi ysm yso ysr yss ysy yxy yyb yys yyy