-up a-a a-b a-c aaa aab aac aap aar aas aau aay ab- aba abb abc abp abr abs abu aby ac- aca acb acc acp acr acs acu acy ap- apa apb apc app apr aps apu apy ar- ara arb arc arp arr ars aru ary as- asa asb asc asp asr ass asu asy au- aua aub auc aup aur aus ay- aya ayc ayp ayr ays ayu b-p b-u baa bab bac bap bar bas bau bay bba bbb bbc bbp bbr bbs bbu bby bca bcb bcc bcp bcr bcs bcu bcy bpa bpb bpc bpp bpr bps bpu bpy bra brb brp brr brs bru bry bsa bsb bsc bsp bsr bss bsu bsy bua bub buc bup bur bus buu buy by- bya byc byp byr bys byu c-- caa cab cac cap car cas cau cay cba cbb cbc cbp cbr cbs cbu cby cca ccb ccc ccp ccr ccs ccu cpa cpb cpc cpp cpr cps cpu cra crb crc crp crr crs cru cry csa csb csc csp csr css csu csy cua cub cuc cup cur cus cuu cuy cya cyb cyc cyp cyr cys p-p paa pab pac pap par pas pau pay pba pbb pbc pbp pbr pbs pbu pby pca pcb pcc pcp pcr pcs pcu ppa ppb ppc ppp ppr pps ppu pra prb prc prp prr prs pru pry ps- psa psb psc psp psr pss psu psy pua pub puc pup pur pus puu puy py- pya pyb pyc pyr pys pyu ra- raa rab rac rap rar ras rau ray rba rbb rbc rbp rbr rbs rbu rca rcb rcc rcp rcr rcs rcu rpa rpb rpc rpp rpr rps rpu rra rrb rrc rrp rrr rrs rru rsa rsb rsc rsp rsr rss rsu rua rub ruc rup rur rus ruu ruy ry- rya ryc ryr rys ryu ryy saa sab sac sap sar sas sau say sba sbb sbc sbp sbr sbs sbu sby sca scb scc scp scr scs scu spa spb spc spp spr sps spu spy sr- sra srb src srp srr srs sry ss- ssa ssb ssc ssp ssr sss ssu sua sub suc sup sur sus suu suy sy- sya syb syc syp syr sys syu ua- uaa uab uac uap uar uas uau uay uba ubb ubc ubp ubr ubs ubu uby uca ucb ucc ucp ucr ucs ucu up- upa upb upc upp upr ups upu ur- ura urb urc urp urr urs uru ury usa usb usc usp usr uss usu uua uuc uur uus uuu uyc uys uyu yaa yab yac yap yar yas yau yay ybc ybp ybr ybs yby yca ycc ycp ycs ycu ycy ypa yps ypu yra yrc yrp yrs yru ysa ysb ysc ysp ysr yss ysu ysy yua yup yur yus yuu yuy yyb yyc yys yyu yyy