a-a aaa aad aao aar aas aau aax ad- ada add ado adr ads adu adx aoa aod aoo aor aos aou aox ar- ara ard aro arr ars aru arx as- asa asd aso asr ass asu asx au- aua aud auo aur aus aux ax- axa axo axr axs axx daa dad dao dar das dau dax dda ddd ddo ddr dds ddu ddx doa dod doo dor dos dou dox dra drd dro drr drs dru drx dsa dsd dso dsr dss dsu dsx dua dud duo dur dus dux dxd dxo dxr dxs dxx oaa oad oao oar oas oau oax oda odd odo odr ods odu oo- ooa ood ooo oor oos oox or- ora ord oro orr ors oru orx os- osa osd oso osr oss osu osx ou- oua oud ouo our ous ox- oxa oxo oxx ra- raa rad rao rar ras rau rax rda rdd rdo rdr rds rdu rdx roa rod roo ror ros rou rox rra rrd rrr rrs rru rsa rsd rso rsr rss rsu rsx rua rud ruo rur rus ruu rux rxr rxs saa sad sao sar sas sau sax sda sdd sdo sdr sds sdu soa sod soo sor sos sou sox sr- sra srd sro srr srs srx ss- ssa ssd sso ssr sss ssu ssx sua sud suo sur sus suu sux sxs sxu ua- uaa uad uao uar uas uau uda udd udo udr uds udu udx uoa uod uoo uor uos uox ur- ura urd uro urr urs uru urx usa usd uso usr uss usu usx uua uur uus uuu uxo uxr uxu xaa xad xar xas xau xda xdr xds xoa xod xoo xor xos xox xrd xrx xsa xss xus xxo xxx