rer res reu rh- rha rhb rhc rhd rhe rhh rhl rhr rhs rhu rkb rkc rke rkk rks rku rla rlc rld rle rlh rll rlr rls rlu rra rrb rrc rrd rrh rrk rrl rrr rrs rru rsa rsb rsc rsd rse rsh rsk rsl rsr rss rsu rua rub ruc rud rue ruh ruk rur rus ruu saa sab sac sad sae sah sak sal sar sas sau sba sbb sbc sbd sbe sbh sbk sbl sbr sbs sbu sca scb scc scd sce sch sck scl scr scs scu sda sdb sdc sdd sde sdh sdk sdl sdr sds sdu se- sea seb sec sed see seh sek sel ser ses seu sh- sha shb shc shd she shh shk shl shr shs shu sk- ska skb skc skd ske skh skk skl skr sks sku sla slb slc sld sle slh slk sll slr sls slu sr- sra srb src srd sre srh srk srl srr srs ss- ssa ssb ssc ssd sse ssh ssk ssl ssr sss ssu sua sub suc sud sue suh suk sul sur sus suu ua- uaa uab uac uad uae uah uak ual uar uas uau uba ubb ubc ube ubh ubk ubl ubr ubs ubu uca ucb ucc ucd uce uch uck ucl ucr ucs ucu uda udb udc udd ude udk udl udr uds udu uea ueb uec ued uee ueh uel uer ues uha uhb uhc uhd uhe uhh uhl uhr uhs uhu uka ukb ukc uke ukk ukl ukr uku ula ulb ulc uld ule ulk ull ulr uls ulu ur- ura urb urc urd ure urk url urr urs uru usa usb usc usd use ush usk usl usr uss usu uua uuc uue uur uus uuu