-up a-a a-b a-c aaa aab aac aae aap aas aau ab- aba abb abc abe abp abs abu ac- aca acb acc ace acp acs acu aea aeb aec aee aep aes aeu ap- apa apb apc ape app aps apu as- asa asb asc ase asp ass asu au- aua aub auc aue aup aus b-p b-u baa bab bac bae bap bas bau bba bbb bbc bbe bbp bbs bbu bca bcb bcc bce bcp bcs bcu be- bea beb bec bee bep bes beu bpa bpb bpc bpe bpp bps bpu bsa bsb bsc bse bsp bss bsu bua bub buc bue bup bus buu c-- caa cab cac cae cap cas cau cba cbb cbc cbe cbp cbs cbu cca ccb ccc cce ccp ccs ccu ce- cea ceb cec cee cep ces ceu cpa cpb cpc cpe cpp cps cpu csa csb csc cse csp css csu cua cub cuc cue cup cus cuu eaa eab eac eae eap eas eau eba ebb ebc ebe ebp ebs ebu ec- eca ecb ecc ece ecs ecu eea eeb eec eee eep ees ep- epa epb epc epe epp eps epu es- esa esb esc ese esp ess esu eu- eua eub euc eue eup eus p-p paa pab pac pae pap pas pau pba pbb pbc pbe pbp pbs pbu pca pcb pcc pce pcp pcs pcu pea peb pec pee pep pes peu ppa ppb ppc ppe ppp pps ppu ps- psa psb psc pse psp pss psu pua pub puc pue pup pus puu saa sab sac sae sap sas sau sba sbb sbc sbe sbp sbs sbu sca scb scc sce scp scs scu se- sea seb sec see sep ses seu spa spb spc spe spp sps spu ss- ssa ssb ssc sse ssp sss ssu sua sub suc sue sup sus suu ua- uaa uab uac uae uap uas uau uba ubb ubc ube ubp ubs ubu uca ucb ucc uce ucp ucs ucu uea ueb uec uee uep ues up- upa upb upc upe upp ups upu usa usb usc use usp uss usu uua uuc uue uus uuu