-up a-a a-b aaa aab aad aap aau aay ab- aba abb abd abp abu aby ad- ada adb add adp adu ady ap- apa apb apd app apu apy au- aua aub aud aup ay- aya ayd ayp ayu b-p b-u baa bab bad bap bau bay bba bbb bbd bbp bbu bby bda bdb bdd bdp bdu bdy bpa bpb bpd bpp bpu bpy bua bub bud bup buu buy by- bya byd byp byu daa dab dad dap dau day dba dbb dbd dbp dbu dby dda ddb ddd ddp ddu ddy dpa dpb dpd dpp dpu dua dub dud dup duy dy- dya dyb dyd dyp dyu dyy p-p paa pab pad pap pau pay pba pbb pbd pbp pbu pby pda pdb pdd pdp pdu ppa ppb ppd ppp ppu pua pub pud pup puu puy py- pya pyb pyd pyu ua- uaa uab uad uap uau uay uba ubb ubp ubu uby uda udb udd udp udu up- upa upb upd upp upu uua uuu uyu yaa yab yad yap yau yay ybp yby yda ydy ypa ypd ypu yua yud yup yuu yuy yyb yyu yyy