-up a-a a-b aaa aab aad aao aap aas aau ab- aba abb abd abo abp abs abu ad- ada adb add ado adp ads adu aoa aob aod aoo aop aos aou ap- apa apb apd apo app aps apu as- asa asb asd aso asp ass asu au- aua aub aud auo aup aus b-p b-u baa bab bad bao bap bas bau bba bbb bbd bbo bbp bbs bbu bda bdb bdd bdo bdp bds bdu boa bob bod boo bop bos bou bpa bpb bpd bpo bpp bps bpu bsa bsb bsd bso bsp bss bsu bua bub bud buo bup bus buu daa dab dad dao dap das dau dba dbb dbd dbo dbp dbs dbu dda ddb ddd ddo ddp dds ddu doa dob dod doo dop dos dou dpa dpb dpd dpo dpp dps dpu dsa dsb dsd dso dsp dss dsu dua dub dud duo dup dus oaa oab oad oao oap oas oau ob- oba obb obd obo obp obs obu oda odb odd odo odp ods odu oo- ooa oob ood ooo oop oos op- opa opb opd opo opp ops os- osa osb osd oso osp oss osu ou- oua oud ouo oup ous p-p paa pab pad pao pap pas pau pba pbb pbd pbo pbp pbs pbu pda pdb pdd pdo pdp pds pdu poa pob pod poo pop pos pou ppa ppb ppd ppo ppp pps ppu ps- psa psb psd pso psp pss psu pua pub pud pup pus puu saa sab sad sao sap sas sau sba sbb sbd sbo sbp sbs sbu sda sdb sdd sdo sdp sds sdu soa sob sod soo sop sos sou spa spb spd spo spp sps spu ss- ssa ssb ssd sso ssp sss ssu sua sub sud suo sup sus suu ua- uaa uab uad uao uap uas uau uba ubb ubo ubp ubs ubu uda udb udd udo udp uds udu uoa uob uod uoo uop uos up- upa upb upd upo upp ups upu usa usb usd uso usp uss usu uua uus uuu