-er -up a-a a-b aaa aab aad aae aap aar aas aau ab- aba abb abd abe abp abr abs abu ad- ada adb add ade adp adr ads adu aea aeb aed aee aep aer aes aeu ap- apa apb apd ape app apr aps apu ar- ara arb ard are arp arr ars aru as- asa asb asd ase asp asr ass asu au- aua aub aud aue aup aur aus b-p b-u baa bab bad bae bap bar bas bau bba bbb bbd bbe bbp bbr bbs bbu bda bdb bdd bde bdp bdr bds bdu be- bea beb bed bee bep ber bes beu bpa bpb bpd bpe bpp bpr bps bpu bra brb brd bre brp brr brs bru bsa bsb bsd bse bsp bsr bss bsu bua bub bud bue bup bur bus buu daa dab dad dae dap dar das dau dba dbb dbd dbe dbp dbr dbs dbu dda ddb ddd dde ddp ddr dds ddu de- dea deb ded dee dep der des deu dpa dpb dpd dpe dpp dpr dps dpu dra drb drd dre drp drr drs dru dsa dsb dsd dse dsp dsr dss dsu dua dub dud due dup dur dus eaa eab ead eae eap ear eas eau eba ebb ebd ebe ebp ebr ebs ebu ed- eda edb edd ede edp edr eds edu eea eeb eed eee eep eer ees ep- epa epb epd epe epp epr eps epu era erb erd ere erp err ers eru es- esa esb esd ese esp esr ess esu eu- eua eub eud eue eup eur eus p-p paa pab pad pae pap par pas pau pba pbb pbd pbe pbp pbr pbs pbu pda pdb pdd pde pdp pdr pds pdu pea peb ped pee pep per pes peu ppa ppb ppd ppe ppp ppr pps ppu pra prb prd pre prp prr prs pru ps- psa psb psd pse psp psr pss psu pua pub pud pue pup pur pus puu ra- raa rab rad rae rap rar ras rau rba rbb rbd rbe rbp rbr rbs rbu rda rdb rdd rde rdp rdr rds rdu re- rea reb red ree rep rer res reu rpa rpb rpd rpe rpp rpr rps rpu rra rrb rrd rrp rrr rrs rru rsa rsb rsd rse rsp rsr rss rsu rua rub rud rue rup rur rus ruu saa sab sad sae sap sar sas sau sba sbb sbd sbe sbp sbr sbs sbu sda sdb sdd sde sdp sdr sds sdu se- sea seb sed see sep ser ses seu spa spb spd spe spp spr sps spu sr- sra srb srd sre srp srr srs ss- ssa ssb ssd sse ssp ssr sss ssu sua sub sud sue sup sur sus suu ua- uaa uab uad uae uap uar uas uau uba ubb ube ubp ubr ubs ubu uda udb udd ude udp udr uds udu uea ueb ued uee uep uer ues up- upa upb upd upe upp upr ups upu ur- ura urb urd ure urp urr urs uru usa usb usd use usp usr uss usu uua uue uur uus uuu