-al -er -ol a-a a-b a-c aaa aab aac aae aal aao aap aar ab- aba abb abc abe abl abo abp abr ac- aca acb acc ace acl aco acp acr aea aeb aec aee ael aeo aep aer al- ala alb alc ale all alo alp alr aoa aob aoc aoe aol aoo aop aor ap- apa apb apc ape apl apo app apr ar- ara arb arc are arl aro arp arr b-p baa bab bac bae bal bao bap bar bba bbb bbc bbe bbl bbo bbp bbr bca bcb bcc bce bcl bco bcp bcr be- bea beb bec bee bel beo bep ber bla blb blc ble bll blo blp blr boa bob boc boe bol boo bop bor bpa bpb bpc bpe bpl bpo bpp bpr bra brb bre brl bro brp brr c-- caa cab cac cae cal cao cap car cba cbb cbc cbe cbl cbo cbp cbr cca ccb ccc cce ccl cco ccp ccr ce- cea ceb cec cee cel ceo cep cer cl- cla clb clc cle cll clo clp clr co- coa cob coc coe col coo cop cor cpa cpb cpc cpe cpl cpo cpp cpr cra crb crc cre crl cro crp crr eaa eab eac eae eal eao eap ear eba ebb ebc ebe ebl ebo ebp ebr ec- eca ecb ecc ece ecl eco ecr eea eeb eec eee eel eeo eep eer ela elb elc ele ell elo elp elr eo- eoa eob eoc eoe eol eoo eop eor ep- epa epb epc epe epl epo epp epr era erb erc ere erl ero erp err l-p la- laa lab lac lae lal lao lap lar lba lbb lbc lbe lbl lbo lbp lbr lca lcb lcc lce lcl lco lcp lcr lea leb lec lee lel leo lep ler lla llb llc lle lll llo llp llr loa lob loc loe lol loo lop lor lpa lpb lpc lpe lpl lpo lpp lpr lra lrb lrc lro lrp lrr oaa oab oac oae oal oao oap oar ob- oba obb obc obe obl obo obp obr oc- oca ocb occ ocl oco ocp ocr oea oeb oec oee oel oeo oep oer ola olb olc ole oll olo olp oo- ooa oob ooc ool ooo oop oor op- opa opb opc ope opl opo opp opr or- ora orb orc ore orl oro orp orr p-p paa pab pac pae pal pao pap par pba pbb pbc pbe pbl pbo pbp pbr pca pcb pcc pce pcl pco pcp pcr pea peb pec pee pel peo pep per pla plb plc ple pll plo plp plr poa pob poc poe pol poo pop por ppa ppb ppc ppe ppl ppo ppp ppr pra prb prc pre prl pro prp prr ra- raa rab rac rae ral rao rap rar rba rbb rbc rbe rbl rbo rbp rbr rca rcb rcc rce rcl rco rcp rcr re- rea reb rec ree rel reo rep rer rla rlc rle rll rlo rlp rlr roa rob roc roe rol roo rop ror rpa rpb rpc rpe rpl rpo rpp rpr rra rrb rrc rrl rrp rrr

a-be aaaa aaab aaac aaae aaal aaap aaar aaba aabb aabc aabl aabp aaca aacb aacc aace aacl aaco aacp aacr aaea aaec aaep aala aalc aale aall aalo aaoe aaoo aapa aapc aapl aapo aara aarc aare aaro aarp abaa abab abac abae abal abap abar abb- abba abbb abbe abbo abbr abca abcb abcc abcl abcp abcr abec abee abel aber abla able ablo aboa abob abol aboo abor abpa abpc abpp abpr abra abrc abro acaa acab acac acae acap acar acba acbl acca accc acce acco accp ace- acea acec acel acer acla aclc acle aclr acoa acoe acol acop acor acpa acpe acpr acr- acra acrc acre acro acrr aeac aeap aecb aecl aeer aela aelc aelp aer- aera aerc aero al-p alaa alac alae alal alao alap alar alb- alba albc albe albo alca alcc alce alco alea alec alee aleo alep aler all- alla alle alll allo allr aloa aloc aloe alol aloo alop alor alpa alpe alpl alpo alro aoba aoca aoce aola aole aopo aora aorb apac apal apao apap apar apba apbr apca apcb apcc apco apcr apea apec apel apep aper apl- apla aple aplp apo- apoc apoe apoo apop apor appa appc appl appr apra aprc apre apro arab arac arae aral arap arar arba arbe arc- arca arce arco area arec aree arel areo arep arla arle arlo aroa arob aroe aroo aror arpa arpe arpl arr- arra arrc arre arro arrr baaa baal baar baba babb babe babo babr bac- baca bacc bace baco bael baer bala balc bale ball balo baol bapa bapc bape bapp bar- bara barb barc bare baro barr bbbb bbeb bblb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bccl bcec bcer bcor bcpl bcpp bcra beal beap bear beba bebb bebe bebo beca beeb beel beep beer bela bele bell belo belp beo- beor bepo bera berc bere bero berr blaa blab blac blae blea bleb blee bleo blob bloc bloo blop blrc boab boac boal boar boba bobb bobe bobo boca boce boco boea boec boee boel boeo boep boer bola bole boll bolo boob booc booe bool boop boor bopa bope bopp bor- bora bore boro borr bpcp bpea bpel bpoe bprc brab brac brae brao brca brcb brce brea breb brec bree brel breo brep brer brlp broa brob broc broe brol broo bror brrr c-bo caaa caab caac caal caap caba cabe cabo cac- caca cacc cace caco cacr caec caer cala calc cale call calo calp caol caor capa capb capc cape capo capp cara carb carc care carl caro carp carr cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcp cbcr cbea cbec cbee cber cblb cblc cbol cbpc cbpp cbre cbrl ccaa ccab ccac ccap ccar ccba ccbc ccca cccb