-ic b-u bbb bbc bbi bbo bbr bbt bbu bbx bby bcb bcc bci bco bcr bct bcu bcx bcy bi- bib bic bii bio bir bit biu bix biy bob boc boi boo bor bot bou box boy brb bri bro brr brt bru brx bry btb btc bti bto btr btt btu btx bty bub buc bui buo bur but buu bux buy bxb bxi bxo bxx by- byc byi byo byr byt byu c-- cbb cbc cbi cbo cbr cbt cbu cbx cby ccb ccc cci cco ccr cct ccu ccx ci- cib cic cii cio cir cit ciu cix co- cob coc coi coo cor cot cou cox coy crb crc cri cro crr crt cru crx cry ctb ctc cti cto ctr ctt ctu ctx cty cub cuc cui cuo cur cut cuu cuy cxc cxi cxo cxr cxt cxx cyb cyc cyo cyr cyt ibb ibc ibi ibo ibr ibt ibu ibx iby icb icc ici ico icr ict icu icy iib iic iii iio iir iit iiu iix io- iob ioc ioi ioo ior iot iou ir- irb irc iri iro irr irt iru irx iry itb itc iti ito itt itu itx ity iu- iub iuc iui iur iut ixc ixi ixy iyc iyo iyr iyt iyy o-i ob- obb obc obi obo obr obt obu obx oby oc- ocb occ oci oco ocr oct ocu ocx oib oic oii oio oir oit oiu oo- oob ooc ooi ooo oor oot oox or- orb orc ori oro orr ort oru orx ory ot- otb otc oti oto otr ott otu ou- ouc oui ouo our out ox- oxb oxc oxi oxo oxt oxx oxy oyi oyo rbb rbc rbi rbo rbr rbt rbu rbx rcb rcc rci rco rcr rct rcu rcx rib ric rii rio rir rit rix riy rob roc roi roo ror rot rou rox roy rrb rrc rri rrr rrt rru rtb rtc rti rto rtr rtt rtu rtx rty rub ruc rui ruo rur rut ruu rux ruy rxr ry- ryc ryo ryr ryu ryy t-x tbb tbc tbi tbo tbr tbt tbu tcb tcc tci tco tcr tct tcu tcx tib tic tii tio tir tit tiu tix tiy to- tob toc toi too tor tot tou tox toy trb trc tri tro trr trt tru trx try ttb ttc tti tto ttr ttt ttu ttx tty tub tuc tui tuo tur tut tuu tux tuy txi txt txu tyc tyo tyr tyt ubb ubc ubi ubo ubr ubt ubu ubx uby ucb ucc uci uco ucr uct ucu uib uic uii uio uir uit uiu uob uoc uoo uor uot uox ur- urb urc uri uro urr urt uru urx ury utb utc uti uto utr utt utu utx uty uuc uur uut uuu uxb uxc uxo uxr uxt uxu uyc uyi uyo uyu xbc xbr xbx xcb xci xcr xcx xic xii xio xit xiu xix xoc xoi xoo xor xot xox xrc xrt xrx xry xtc xti xtr xtx xty xui xxi xxo xxx xxy xyr xyy ybc ybi ybr yby ycc yci yco ycu ycy yii yio yir yit yob yoc yoi yoo yor yot you yox yoy yrc yro yrt yru ytc yto ytr ytt ytu yui yuo yur yut yuu yux yuy yxy yyb yyc yyt yyu yyy