a-a a-b a-c aaa aab aac aad aao aas aaw aay ab- aba abb abc abd abo abs abw aby ac- aca acb acc acd aco acs acw acy ad- ada adb adc add ado ads adw ady aoa aob aoc aod aoo aos aow as- asa asb asc asd aso ass asw asy aw- awa awb awc awd awo aws aww awy ay- aya ayc ayd ayo ays ayw baa bab bac bad bao bas baw bay bba bbb bbc bbd bbo bbs bbw bby bca bcb bcc bcd bco bcs bcy bda bdb bdc bdd bdo bds bdw bdy boa bob boc bod boo bos bow boy bsa bsb bsc bsd bso bss bsw bsy bwa bwb bwc bwd bwo bws bwy by- bya byc byd byo bys c-- caa cab cac cad cao cas caw cay cba cbb cbc cbd cbo cbs cbw cby cca ccb ccc ccd cco ccs ccw cda cdb cdc cdd cdo cds cdw cdy co- coa cob coc cod coo cos cow coy csa csb csc csd cso css csw csy cw- cwa cwb cwc cwd cwo cws cya cyb cyc cyd cyo cys cyw daa dab dac dad dao das daw day dba dbb dbc dbd dbo dbs dby dca dcb dcc dcd dco dcs dcw dda ddb ddc ddd ddo dds ddw ddy doa dob doc dod doo dos dow doy dsa dsb dsc dsd dso dss dsw dsy dwa dwb dwc dwo dws dww dy- dya dyb dyc dyd dyo dys dyw dyy oaa oab oac oad oao oas oaw ob- oba obb obc obd obo obs obw oby oc- oca ocb occ ocd oco ocs ocw oda odb odc odd odo ods oo- ooa oob ooc ood ooo oos oow os- osa osb osc osd oso oss osw owa owb owc owd owo ows oww oya oyd oyo oys saa sab sac sad sao sas saw say sba sbb sbc sbd sbo sbs sbw sby sca scb scc scd sco scs scw sda sdb sdc sdd sdo sds sdw sdy soa sob soc sod soo sos sow soy ss- ssa ssb ssc ssd sso sss ssw swa swb swc swd swo sws swy sy- sya syb syc syd sys waa wab wac wad wao was waw way wba wbb wbc wbd wbo wbs wbw wca wcb wcc wcd wco wcs wcw wda wdb wdc wds wdy woa wob woc wod woo wos wow woy wsa wsb wsc wsd wso wss wsw wwa wwc wwd wwo www wy- wya wyc wyd wyo wys yaa yab yac yad yao yas yaw yay ybc ybs yby yca ycc ycd yco ycs ycw ycy yda ydo yds ydy yob yoc yod yoo yos yow yoy ysa ysb ysc yso yss ysy ywc yyb yyc yys yyy