a-a a-c aaa aac aar aas aau aax aay ac- aca acc acr acs acu acx acy ar- ara arc arr ars aru arx ary as- asa asc asr ass asu asx asy au- aua auc aur aus aux ax- axa axr axs axx ay- aya ayc ayr ays ayu ayx c-- caa cac car cas cau cax cay cca ccc ccr ccs ccu ccx cra crc crr crs cru crx cry csa csc csr css csu csx csy cua cuc cur cus cuu cuy cxc cxr cxs cxx cya cyc cyr cys ra- raa rac rar ras rau rax ray rca rcc rcr rcs rcu rcx rra rrc rrr rrs rru rsa rsc rsr rss rsu rsx rua ruc rur rus ruu rux ruy rxr rxs ry- rya ryc ryr rys ryu ryy saa sac sar sas sau sax say sca scc scr scs scu scx sr- sra src srr srs srx sry ss- ssa ssc ssr sss ssu ssx sua suc sur sus suu sux suy sxc sxs sxu sy- sya syc syr sys syu syx ua- uaa uac uar uas uau uay uca ucc ucr ucs ucu ur- ura urc urr urs uru urx ury usa usc usr uss usu usx uua uuc uur uus uuu uxc uxr uxu uyc uys uyu xaa xac xar xas xau xcr xcx xrc xrx xry xsa xsc xss xus xxx xxy xyr xyy yaa yac yar yas yau yax yay yca ycc ycs ycu ycy yra yrc yrs yru ysa ysc ysr yss ysu ysy yua yur yus yuu yux yuy yxa yxy yyc yys yyu yyy