a-a a-b a-c aaa aab aac aaj aar aas aau ab- aba abb abc abj abr abs abu ac- aca acb acc acj acr acs acu aja ajb ajc ajj ajr ajs aju ar- ara arb arc arj arr ars aru as- asa asb asc asj asr ass asu au- aua aub auc auj aur aus b-u baa bab bac baj bar bas bau bba bbb bbc bbr bbs bbu bca bcb bcc bcj bcr bcs bcu bja bjc bjj bjr bjs bju bra brb brj brr brs bru bsa bsb bsc bsj bsr bss bsu bua bub buc buj bur bus buu c-- c-j caa cab cac caj car cas cau cba cbb cbc cbj cbr cbs cbu cca ccb ccc ccj ccr ccs ccu cja cjb cjc cjr cjs cra crb crc crj crr crs cru csa csb csc csj csr css csu cua cub cuc cur cus cuu jaa jab jac jaj jar jas jau jba jbc jbj jbr jbs jbu jca jcb jcc jcr jcs jcu jja jjb jjc jjj jjr jjs jju jra jrb jrc jrr jrs jsa jsb jsc jsj jsr jss jsu jub jur jus ra- raa rab rac raj rar ras rau rba rbb rbc rbr rbs rbu rca rcb rcc rcj rcr rcs rcu rja rjc rjr rra rrb rrc rrr rrs rru rsa rsb rsc rsj rsr rss rsu rua rub ruc rur rus ruu saa sab sac saj sar sas sau sba sbb sbc sbj sbr sbs sbu sca scb scc scj scr scs scu sja sjb sjc sjj sjr sjs sju sr- sra srb src srj srr srs ss- ssa ssb ssc ssj ssr sss ssu sua sub suc sur sus suu ua- uaa uab uac uaj uar uas uau uba ubb ubc ubr ubs ubu uca ucb ucc ucj ucr ucs ucu ujc ujs ur- ura urb urc urr urs uru usa usb usc usj usr uss usu uua uuc uur uus uuu