-up a-a a-b a-t aaa aab aad aao aap aas aat aau ab- aba abb abd abo abp abs abt abu ad- ada adb add ado adp ads adt adu aoa aob aod aoo aop aos aot aou ap- apa apb apd apo app aps apt apu as- asa asb asd aso asp ass ast asu at- ata atb atd ato atp ats att atu au- aua aub aud auo aup aus aut b-p b-u baa bab bad bao bap bas bat bau bba bbb bbd bbo bbp bbs bbt bbu bda bdb bdd bdo bdp bds bdt bdu boa bob bod boo bop bos bot bou bpa bpb bpd bpo bpp bps bpt bpu bsa bsb bsd bso bsp bss bst bsu bta btb btd bto btp bts btt btu bua bub bud buo bup bus but buu daa dab dad dao dap das dat dau dba dbb dbd dbo dbp dbs dbt dbu dda ddb ddd ddo ddp dds ddt ddu doa dob dod doo dop dos dot dou dpa dpb dpd dpo dpp dps dpt dpu dsa dsb dsd dso dsp dss dst dsu dta dtb dtd dto dtp dts dtt dtu dua dub dud duo dup dus dut oaa oab oad oao oap oas oat oau ob- oba obb obd obo obp obs obt obu oda odb odd odo odp ods odt odu oo- ooa oob ood ooo oop oos oot op- opa opb opd opo opp ops opt os- osa osb osd oso osp oss ost osu ot- ota otb otd oto otp ots ott otu ou- oua oud ouo oup ous out p-p paa pab pad pao pap pas pat pau pba pbb pbd pbo pbp pbs pbt pbu pda pdb pdd pdo pdp pds pdt pdu poa pob pod poo pop pos pot pou ppa ppb ppd ppo ppp pps ppt ppu ps- psa psb psd pso psp pss pst psu pt- pta ptb ptd pto ptp pts ptt ptu pua pub pud pup pus put puu saa sab sad sao sap sas sat sau sba sbb sbd sbo sbp sbs sbt sbu sda sdb sdd sdo sdp sds sdt sdu soa sob sod soo sop sos sot sou spa spb spd spo spp sps spt spu ss- ssa ssb ssd sso ssp sss sst ssu sta stb std sto stp sts stt stu sua sub sud suo sup sus sut suu taa tab tad tao tap tas tat tau tba tbb tbd tbo tbp tbs tbt tbu tda tdb tdd tdo tdp tds tdt tdu to- toa tob tod too top tos tot tou tpa tpb tpd tpo tpp tps tpt tpu tsa tsb tsd tso tsp tss tst tsu tta ttb ttd tto ttp tts ttt ttu tua tub tud tuo tup tus tut tuu ua- uaa uab uad uao uap uas uat uau uba ubb ubo ubp ubs ubt ubu uda udb udd udo udp uds udt udu uoa uob uod uoo uop uos uot up- upa upb upd upo upp ups upt upu usa usb usd uso usp uss ust usu uta utb utd uto utp uts utt utu uua uus uut uuu