-er -up ddd dde ddi ddl ddp ddr dds ddu de- ded dee dei del dep der des deu di- did die dii dil dip dir dis diu dl- dld dle dli dll dlp dlr dls dlu dpd dpe dpi dpl dpp dpr dps dpu drd dre dri drl drp drr drs dru dsd dse dsi dsl dsp dsr dss dsu dud due dui dul dup dur dus ed- edd ede edi edl edp edr eds edu eed eee eel eep eer ees eid eie eii eil eip eir eis eiu eld ele eli ell elp elr els elu ep- epd epe epi epl epp epr eps epu erd ere eri erl erp err ers eru es- esd ese esi esl esp esr ess esu eu- eud eue eui eul eup eur eus i-d idd ide idi idl idp idr ids idu ie- ied iee iei iel iep ier ies iid iie iii iil iip iir iis iiu il- ild ile ili ill ilp ilr ils ilu ipd ipe ipi ipl ipp ipr ips ipu ir- ird ire iri irl irp irr irs iru is- isd ise isi isl isp isr iss isu iu- iud iue iui iup iur ius l-p ldd lde ldi ldl ldp ldr lds ldu led lee lei lel lep ler les leu lid lie lii lil lip lir lis liu lld lle lli lll llp llr lls llu lpd lpe lpi lpl lpp lpr lps lpu lrd lri lrp lrr lrs lru lsd lse lsi lsl lsp lsr lss lsu lud lue lui lul lup lur lus luu p-p pdd pde pdi pdl pdp pdr pds pdu ped pee pei pel pep per pes peu pid pie pii pil pip pir pis piu pld ple pli pll plp plr pls plu ppd ppe ppi ppl ppp ppr pps ppu prd pre pri prl prp prr prs pru ps- psd pse psi psl psp psr pss psu pud pue pui pul pup pur pus puu rdd rde rdi rdl rdp rdr rds rdu re- red ree rei rel rep rer res reu rid rie rii ril rip rir ris rld rle rli rll rlp rlr rls rlu rpd rpe rpi rpl rpp rpr rps rpu rrd rri rrl rrp rrr rrs rru rsd rse rsi rsl rsp rsr rss rsu rud rue rui rup rur rus ruu sdd sde sdi sdl sdp sdr sds sdu se- sed see sei sel sep ser ses seu sid sie sii sil sip sir sis siu sld sle sli sll slp slr sls slu spd spe spi spl spp spr sps spu sr- srd sre sri srl srp srr srs ss- ssd sse ssi ssl ssp ssr sss ssu sud sue sui sul sup sur sus suu udd ude udi udl udp udr uds udu ued uee uei uel uep uer ues uid uie uii uil uip uir uis uiu uld ule uli ull ulp ulr uls ulu up- upd upe upi upp upr ups upu ur- urd ure uri url urp urr urs uru usd use usi usl usp usr uss usu uue uur uus uuu