lpr lps lpt lra lrb lrc lrf lri lro lrp lrr lrs lrt lsa lsb lsc lse lsf lsi lsl lso lsp lsr lss lst lta ltb ltc lte ltf lti ltl lto ltp ltr lts ltt o-i oaa oab oac oae oaf oai oal oao oap oar oas oat ob- oba obb obc obe obf obi obl obo obp obr obs obt oc- oca ocb occ ocf oci ocl oco ocp ocr ocs oct oea oeb oec oee oef oei oel oeo oep oer oes oet of- ofa ofb ofc ofe off ofi ofl ofo ofp ofr ofs oft oia oib oic oie oif oii oil oio oip oir ois oit ola olb olc ole olf oli oll olo olp ols olt oo- ooa oob ooc oof ooi ool ooo oop oor oos oot op- opa opb opc ope opf opi opl opo opp opr ops opt or- ora orb orc ore orf ori orl oro orp orr ors ort os- osa osb osc ose osf osi osl oso osp osr oss ost ot- ota otb otc ote otf oti otl oto otp otr ots ott p-p paa pab pac pae paf pai pal pao pap par pas pat pba pbb pbc pbe pbf pbi pbl pbo pbp pbr pbs pbt pca pcb pcc pce pcf pci pcl pco pcp pcr pcs pct pea peb pec pee pef pei pel peo pep per pes pet pfa pfb pfc pfe pff pfi pfl pfo pfp pfr pfs pft pia pib pic pie pif pii pil pio pip pir pis pit pla plb plc ple plf pli pll plo plp plr pls plt poa pob poc poe pof poi pol poo pop por pos pot ppa ppb ppc ppe ppf ppi ppl ppo ppp ppr pps ppt pra prb prc pre prf pri prl pro prp prr prs prt ps- psa psb psc pse psf psi psl pso psp psr pss pst pt- pta ptb ptc pte ptf pti ptl pto ptp ptr pts ptt ra- raa rab rac rae raf rai ral rao rap rar ras rat rba rbb rbc rbe rbf rbi rbl rbo rbp rbr rbs rbt rca rcb rcc rce rcf rci rcl rco rcp rcr rcs rct re- rea reb rec ree ref rei rel reo rep rer res ret rfa rfb rfc rfe rff rfi rfl rfo rfp rfr rfs rft ria rib ric rie rif rii ril rio rip rir ris rit rla rlc rle rlf rli rll rlo rlp rlr rls rlt roa rob roc roe rof roi rol roo rop ror ros rot rpa rpb rpc rpe rpf rpi rpl rpo rpp rpr rps rpt rra rrb rrc rrf rri rrl rrp rrr rrs rrt rsa rsb rsc rse rsf rsi rsl rso rsp rsr rss rst rta rtb rtc rte rtf rti rtl rto rtp rtr rts rtt saa sab sac sae saf sai sal sao sap sar sas sat sba sbb sbc sbe sbf sbi sbl sbo sbp sbr sbs sbt sca scb scc sce scf sci scl sco scp scr scs sct se- sea seb sec see sef sei sel seo sep ser ses set sfa sfb sfc sfe sff sfi sfl sfo sfp sfr sfs sft sia sib sic sie sif sii sil sio sip sir sis sit sla slb slc sle slf sli sll slo slp slr sls slt soa sob soc soe sof soi sol soo sop sor sos sot spa spb spc spe spf spi spl spo spp spr sps spt sr- sra srb src sre srf sri srl sro srp srr srs srt ss- ssa ssb ssc sse ssf ssi ssl sso ssp ssr sss sst sta stb stc ste stf sti stl sto stp str sts stt taa tab tac tae taf tai tal tao tap tar tas tat tba tbb tbc tbe tbf tbi tbl tbo tbp tbr tbs tbt tca tcb tcc tce tcf tci tcl tco tcp tcr tcs tct te- tea teb tec tee tef tei tel teo tep ter tes tet tfa tfb tfc tfe tff tfi tfl tfo tfp tfr tfs tft tia tib tic tie tif tii til tio tip tir tis tit tla tlc tle tlf tli tll tlo tlp tlr tls tlt to- toa tob toc toe tof toi tol too top tor tos tot tpa tpb tpc tpe tpf tpi tpl tpo tpp tpr tps tpt tra trb trc tre trf tri trl tro trp trr trs trt tsa tsb tsc tse tsf tsi tsl tso tsp tsr tss tst tta ttb ttc tte ttf tti ttl tto ttp ttr tts ttt