-al -er -ol a-a a-b a-c a-t aaa aab aac aae aal aao aap aar aat ab- aba abb abc abe abl abo abp abr abt ac- aca acb acc ace acl aco acp acr act aea aeb aec aee ael aeo aep aer aet al- ala alb alc ale all alo alp alr alt aoa aob aoc aoe aol aoo aop aor aot ap- apa apb apc ape apl apo app apr apt ar- ara arb arc are arl aro arp arr art at- ata atb atc ate atl ato atp atr att b-p baa bab bac bae bal bao bap bar bat bba bbb bbc bbe bbl bbo bbp bbr bbt bca bcb bcc bce bcl bco bcp bcr bct be- bea beb bec bee bel beo bep ber bet bla blb blc ble bll blo blp blr blt boa bob boc boe bol boo bop bor bot bpa bpb bpc bpe bpl bpo bpp bpr bpt bra brb bre brl bro brp brr brt bta btb btc bte btl bto btp btr btt c-- caa cab cac cae cal cao cap car cat cba cbb cbc cbe cbl cbo cbp cbr cbt cca ccb ccc cce ccl cco ccp ccr cct ce- cea ceb cec cee cel ceo cep cer cet cl- cla clb clc cle cll clo clp clr clt co- coa cob coc coe col coo cop cor cot cpa cpb cpc cpe cpl cpo cpp cpr cpt cra crb crc cre crl cro crp crr crt cta ctb ctc cte ctl cto ctp ctr ctt eaa eab eac eae eal eao eap ear eat eba ebb ebc ebe ebl ebo ebp ebr ebt ec- eca ecb ecc ece ecl eco ecr ect eea eeb eec eee eel eeo eep eer eet ela elb elc ele ell elo elp elr elt eo- eoa eob eoc eoe eol eoo eop eor eot ep- epa epb epc epe epl epo epp epr ept era erb erc ere erl ero erp err ert eta etb etc ete etl eto etp etr ett l-p la- laa lab lac lae lal lao lap lar lat lba lbb lbc lbe lbl lbo lbp lbr lbt lca lcb lcc lce lcl lco lcp lcr lct lea leb lec lee lel leo lep ler let lla llb llc lle lll llo llp llr llt loa lob loc loe lol loo lop lor lot lpa lpb lpc lpe lpl lpo lpp lpr lpt lra lrb lrc lro lrp lrr lrt lta ltb ltc lte ltl lto ltp ltr ltt oaa oab oac oae oal oao oap oar oat ob- oba obb obc obe obl obo obp obr obt oc- oca ocb occ ocl oco ocp ocr oct oea oeb oec oee oel oeo oep oer oet ola olb olc ole oll olo olp olt oo- ooa oob ooc ool ooo oop oor oot op- opa opb opc ope opl opo opp opr opt or- ora orb orc ore orl oro orp orr ort ot- ota otb otc ote otl oto otp otr ott p-p paa pab pac pae pal pao pap par pat pba pbb pbc pbe pbl pbo pbp pbr pbt pca pcb pcc pce pcl pco pcp pcr pct pea peb pec pee pel peo pep per pet pla plb plc ple pll plo plp plr plt poa pob poc poe pol poo pop por pot ppa ppb ppc ppe ppl ppo ppp ppr ppt pra prb prc pre prl pro prp prr prt pt- pta ptb ptc pte ptl pto ptp ptr ptt ra- raa rab rac rae ral rao rap rar rat rba rbb rbc rbe rbl rbo rbp rbr rbt rca rcb rcc rce rcl rco rcp rcr rct re- rea reb rec ree rel reo rep rer ret rla rlc rle rll rlo rlp rlr rlt roa rob roc roe rol roo rop ror rot rpa rpb rpc rpe rpl rpo rpp rpr rpt rra rrb rrc rrl rrp rrr rrt rta rtb rtc rte rtl rto rtp rtr rtt taa tab tac tae tal tao tap tar tat tba tbb tbc tbe tbl tbo tbp tbr tbt tca tcb tcc tce tcl tco tcp tcr tct te- tea teb tec tee tel teo tep ter tet tla tlc tle tll tlo tlp tlr tlt to- toa tob toc toe tol too top tor tot tpa tpb tpc tpe tpl tpo tpp tpr tpt tra trb trc tre trl tro trp trr trt tta ttb ttc tte ttl tto ttp ttr ttt

a-be aaaa aaab aaac aaae aaal aaap aaar aaba aabb aabc aabl aabp aabt aaca aacb aacc aace aacl aaco aacp aacr aact aaea aaec aaep aala aalc aale aall aalo aaoe aaoo aapa aapc aapl aapo aapt aara aarc aare aaro aarp aart aata aatc aatt abaa abab abac abae abal abap abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcl abcp abcr abct abec abee abel aber abet abla able ablo aboa abob abol aboo abor abot abpa abpc abpp abpr abra abrc abro abta ac-t acaa acab acac acae acap acar acat acba acbl acca accc acce acco accp acct ace- acea acec acel acer acet acla aclc acle aclr acoa acoe acol acop acor acot acpa acpe acpr acpt acr- acra acrc acre acro acrr acta actc acte actl acto actt aeac aeap aecb aecl aect aeer aela aelc aelp aer- aera aerc aero aeta aetc aeto aetr aett al-p alaa alac alae alal alao alap alar alat alb- alba albc albe albo alca alcc alce alco alea alec alee aleo alep aler alet all- alla alle alll allo allr aloa aloc aloe alol aloo alop alor alot alpa alpe alpl alpo alro alta alte alto aoba aoca aoce aola aole aopo aora aorb aort aotc apac apal apao apap apar apat apba apbr apca apcb apcc apco apcr apea apec apel apep aper apet apl- apla aple aplp apo- apoc apoe apoo apop apor apot appa appc