-er -up a-a a-b aaa aab aad aae aap aar aas aau aav ab- aba abb abd abe abp abr abs abu abv ad- ada adb add ade adp adr ads adu adv aea aeb aed aee aep aer aes aeu aev ap- apa apb apd ape app apr aps apu apv ar- ara arb ard are arp arr ars aru arv as- asa asb asd ase asp asr ass asu asv au- aua aub aud aue aup aur aus auv av- ava avb avd ave avp avr avs avu b-p b-u baa bab bad bae bap bar bas bau bav bba bbb bbd bbe bbp bbr bbs bbu bda bdb bdd bde bdp bdr bds bdu bdv be- bea beb bed bee bep ber bes beu bev bpa bpb bpd bpe bpp bpr bps bpu bpv bra brb brd bre brp brr brs bru brv bsa bsb bsd bse bsp bsr bss bsu bsv bua bub bud bue bup bur bus buu bva bvb bvd bve bvp bvr bvs bvu bvv daa dab dad dae dap dar das dau dav dba dbb dbd dbe dbp dbr dbs dbu dbv dda ddb ddd dde ddp ddr dds ddu de- dea deb ded dee dep der des deu dev dpa dpb dpd dpe dpp dpr dps dpu dpv dra drb drd dre drp drr drs dru drv dsa dsb dsd dse dsp dsr dss dsu dsv dua dub dud due dup dur dus duv dva dvb dvd dve dvp dvr dvs dvu eaa eab ead eae eap ear eas eau eav eba ebb ebd ebe ebp ebr ebs ebu ebv ed- eda edb edd ede edp edr eds edu eea eeb eed eee eep eer ees eev ep- epa epb epd epe epp epr eps epu era erb erd ere erp err ers eru erv es- esa esb esd ese esp esr ess esu esv eu- eua eub eud eue eup eur eus euv eva evb evd eve evp evr evs evv p-p paa pab pad pae pap par pas pau pav pba pbb pbd pbe pbp pbr pbs pbu pda pdb pdd pde pdp pdr pds pdu pdv pea peb ped pee pep per pes peu pev ppa ppb ppd ppe ppp ppr pps ppu ppv pra prb prd pre prp prr prs pru prv ps- psa psb psd pse psp psr pss psu psv pua pub pud pue pup pur pus puu pva pvb pvd pve pvp pvr pvs pvu pvv ra- raa rab rad rae rap rar ras rau rav rba rbb rbd rbe rbp rbr rbs rbu rda rdb rdd rde rdp rdr rds rdu rdv re- rea reb red ree rep rer res reu rev rpa rpb rpd rpe rpp rpr rps rpu rpv rra rrb rrd rrp rrr rrs rru rsa rsb rsd rse rsp rsr rss rsu rsv rua rub rud rue rup rur rus ruu ruv rva rvb rvd rve rvp rvr rvs rvu rvv saa sab sad sae sap sar sas sau sav sba sbb sbd sbe sbp sbr sbs sbu sbv sda sdb sdd sde sdp sdr sds sdu sdv se- sea seb sed see sep ser ses seu sev spa spb spd spe spp spr sps spu spv sr- sra srb srd sre srp srr srs srv ss- ssa ssb ssd sse ssp ssr sss ssu ssv sua sub sud sue sup sur sus suu suv sva svb svd sve svp svr svs svu svv ua- uaa uab uad uae uap uar uas uau uav uba ubb ube ubp ubr ubs ubu ubv uda udb udd ude udp udr uds udu udv uea ueb ued uee uep uer ues up- upa upb upd upe upp upr ups upu upv ur- ura urb urd ure urp urr urs uru usa usb usd use usp usr uss usu usv uua uue uur uus uuu uva uvb uve uvs uvu uvv v-a v-e vaa vab vad vae vap var vas vau vav vba vbd vbr vbs vbv vdb vdd vde vdp vdr vds vdu vdv vea veb ved vee vep ver ves veu vpa vpb vpd vpe vpp vpr vps vpu vra vrb vrd vre vrp vrr vrs vru vsa vsb vsd vse vsp vsr vss vsu vsv vue vup vur vus vuv vva vvb vvr vvs vvv