-up a-a a-b a-c a-q aaa aab aac aak aap aaq aas aau ab- aba abb abc abk abp abq abs abu ac- aca acb acc ack acp acq acs acu aka akb akc akk akp aks aku ap- apa apb apc apk app apq aps apu aqa aqc aqp aqs as- asa asb asc ask asp asq ass asu au- aua aub auc auk aup aus b-p b-u baa bab bac bak bap baq bas bau bba bbb bbc bbk bbp bbq bbs bbu bca bcb bcc bck bcp bcq bcs bcu bka bkb bkc bkk bkp bkq bks bpa bpb bpc bpp bps bpu bqc bqp bsa bsb bsc bsk bsp bss bsu bua bub buc buk bup bus buu c-- caa cab cac cak cap caq cas cau cba cbb cbc cbk cbp cbq cbs cbu cca ccb ccc cck ccp ccs ccu cka ckb ckc cks cpa cpb cpc cpk cpp cpq cps cpu cqa cqb cqc cqs csa csb csc csk csp csq css csu cua cub cuc cuk cup cuq cus cuu ka- kaa kab kac kak kap kas kau kba kbb kbc kbk kbp kbs kbu kca kcb kcc kck kcp kcs kcu kkb kkc kkk kkp kks kku kpa kpc kpk kpp kpq kps kpu kqa ksa ksb ksc ksk ksp kss ksu kub kuc kuk kup kus kuu p-p paa pab pac pak pap paq pas pau pba pbb pbc pbk pbp pbs pbu pca pcb pcc pck pcp pcq pcs pcu pka pkb pkc pkp pks pku ppa ppb ppc ppk ppp ppq pps ppu pqq pqs ps- psa psb psc psk psp pss psu pua pub puc puk pup pus puu qaa qac qap qas qau qba qbc qbq qbs qca qcc qcp qcs qpc qpp qps qqk qqq qqu qsa qsc qsp qu- qua qus saa sab sac sak sap saq sas sau sba sbb sbc sbk sbp sbq sbs sbu sca scb scc sck scp scs scu sk- ska skb skc skk skp skq sks sku spa spb spc spk spp spq sps spu sqa sqq sqs ss- ssa ssb ssc ssk ssp ssq sss ssu sua sub suc suk sup suq sus suu ua- uaa uab uac uak uap uaq uas uau uba ubb ubc ubk ubp ubs ubu uca ucb ucc uck ucp ucs ucu uka ukb ukc ukk ukp uku up- upa upb upc upk upp ups upu usa usb usc usk usp uss usu uua uuc uus uuu