-up a-a a-b a-t aaa aab aap aas aat aau aay ab- aba abb abp abs abt abu aby ap- apa apb app aps apt apu apy as- asa asb asp ass ast asu asy at- ata atb atp ats att atu au- aua aub aup aus aut ay- aya ayp ays ayt ayu b-p b-u baa bab bap bas bat bau bay bba bbb bbp bbs bbt bbu bby bpa bpb bpp bps bpt bpu bpy bsa bsb bsp bss bst bsu bsy bta btb btp bts btt btu bty bua bub bup bus but buu buy by- bya byp bys byt byu p-p paa pab pap pas pat pau pay pba pbb pbp pbs pbt pbu pby ppa ppb ppp pps ppt ppu ps- psa psb psp pss pst psu psy pt- pta ptb ptp pts ptt ptu pty pua pub pup pus put puu puy py- pya pyb pys pyt pyu saa sab sap sas sat sau say sba sbb sbp sbs sbt sbu sby spa spb spp sps spt spu spy ss- ssa ssb ssp sss sst ssu sta stb stp sts stt stu sty sua sub sup sus sut suu suy sy- sya syb syp sys syt syu taa tab tap tas tat tau tay tba tbb tbp tbs tbt tbu tpa tpb tpp tps tpt tpu tsa tsb tsp tss tst tsu tsy tta ttb ttp tts ttt ttu tty tua tub tup tus tut tuu tuy tya typ tys tyt ua- uaa uab uap uas uat uau uay uba ubb ubp ubs ubt ubu uby up- upa upb upp ups upt upu usa usb usp uss ust usu uta utb utp uts utt utu uty uua uus uut uuu uys uyu yaa yab yap yas yat yau yay ybp ybs yby ypa yps ypu ysa ysb ysp yss yst ysu ysy yta ytp yts ytt ytu yua yup yus yut yuu yuy yyb yys yyt yyu yyy