-al -er -ic -ol a-a a-b a-c a-i aaa aab aac aae aai aak aal aao aar ab- aba abb abc abe abi abk abl abo abr ac- aca acb acc ace aci ack acl aco acr aea aeb aec aee aei aek ael aeo aer ai- aia aib aic aie aii aik ail aio air aka akb akc ake aki akk akl ako akr al- ala alb alc ale ali alk all alo alr aoa aob aoc aoe aoi aok aol aoo aor ar- ara arb arc are ari ark arl aro arr baa bab bac bae bai bak bal bao bar bba bbb bbc bbe bbi bbk bbl bbo bbr bca bcb bcc bce bci bck bcl bco bcr be- bea beb bec bee bei bek bel beo ber bi- bia bib bic bie bii bik bil bio bir bka bkb bkc bke bkk bkl bko bkr bla blb blc ble bli blk bll blo blr boa bob boc boe boi bok bol boo bor bra brb bre bri brk brl bro brr c-- caa cab cac cae cai cak cal cao car cba cbb cbc cbe cbi cbk cbl cbo cbr cca ccb ccc cce cci cck ccl cco ccr ce- cea ceb cec cee cei cek cel ceo cer ci- cia cib cic cie cii cik cil cio cir cka ckb ckc cki cko cl- cla clb clc cle cli clk cll clo clr co- coa cob coc coe coi cok col coo cor cra crb crc cre cri crk crl cro crr eaa eab eac eae eai eak eal eao ear eba ebb ebc ebe ebi ebk ebl ebo ebr ec- eca ecb ecc ece eci eck ecl eco ecr eea eeb eec eee eek eel eeo eer eia eib eic eie eii eik eil eio eir eka ekb ekc eke eki ekl eko ekr ela elb elc ele eli elk ell elo elr eo- eoa eob eoc eoe eoi eok eol eoo eor era erb erc ere eri erk erl ero err ia- iaa iab iac iae iai ial iao iar iba ibb ibc ibe ibi ibk ibl ibo ibr ica icb icc ice ici ick icl ico icr ie- iea iec iee iei iek iel ier iia iib iic iie iii iil iio iir ika ikb ikc ike iki ikk ikl iko ikr il- ila ilb ilc ile ili ilk ill ilo ilr io- ioa iob ioc ioe ioi iol ioo ior ir- ira irb irc ire iri irk irl iro irr ka- kaa kab kac kae kai kak kal kao kar kba kbb kbc kbe kbi kbk kbl kbo kbr kca kcb kcc kce kci kck kcl kcr ke- kea keb kec kee kei kek kel keo ker kia kib kic kie kii kik kil kio kir kkb kkc kke kki kkk kkl kkr kl- kla klb klc kli klo klr koa kob koc koe koi kok kol koo kor kra krc kri krk krl kro krr la- laa lab lac lae lai lak lal lao lar lba lbb lbc lbe lbi lbk lbl lbo lbr lca lcb lcc lce lci lck lcl lco lcr lea leb lec lee lei lek lel leo ler lia lib lic lie lii lik lil lio lir lka lkb lkl lkr lla llb llc lle lli llk lll llo llr loa lob loc loe loi lok lol loo lor lra lrb lrc lri lrk lro lrr o-i oaa oab oac oae oai oak oal oao oar ob- oba obb obc obe obi obk obl obo obr oc- oca ocb occ oci ock ocl oco ocr oea oeb oec oee oei oel oeo oer oia oib oic oie oii oik oil oio oir oka okb okc oke oki okk okl oko okr ola olb olc ole oli olk oll olo oo- ooa oob ooc ooi ook ool ooo oor or- ora orb orc ore ori ork orl oro orr ra- raa rab rac rae rai rak ral rao rar rba rbb rbc rbe rbi rbk rbl rbo rbr rca rcb rcc rce rci rcl rco rcr re- rea reb rec ree rei rek rel reo rer ria rib ric rie rii rik ril rio rir rkb rkc rke rkk rko rla rlc rle rli rll rlo rlr roa rob roc roe roi rok rol roo ror rra rrb rrc rri rrk rrl rrr

a-ak a-be a-ii a-ok aaaa aaab aaac aaae aaai aaal aaar aaba aabb aabc aabi aabl aaca aacb aacc aace aaci aack aacl aaco aacr aaea aaec aaib aaic aaii aaka aake aala aalc aale aali aall aalo aaoe aaoo aara aarc aare aari aaro abaa abab abac abae abai abak abal abar abb- abba abbb abbe abbi abbo abbr abca abcb abcc abci abcl abcr abec abee abel aber abia abib abic abie abil abir abla able ablo aboa abob abok abol aboo abor abra abrc abri abro acaa acab acac acae acai acar acba acbl acca accc acce acci acco ace- acea acec acek acel acer aci- acia acic acie acir acke acla aclc acle acli aclr acoa acoe acol acor acr- acra acrc acre acri acro acrr aeac aebi aecb aeci aecl aeer aeio aeka aela aelc aer- aera aerc aeri aero aiai aiba aibl aibo aica aicc aice aicr aiea aiee aiel aiia aiib aiic aiir aika aike aiki aiko aila aile aili aioc aioi aira aire airi airo akaa akae akai akal akao akar akca akee akel aker akia akie akik akil akio akir akka akki akko akle aklo akok akr- akra akre alaa alac alae alai alak alal alao alar alb- alba albc albe albi albo alca alcc alce alco alea alec alee alek aleo aler ali- alia alib alie alii alik alil alio alir alk- alka alkb alke alki alko all- alla alle alli alll allo allr aloa aloc aloe aloi alok alol aloo alor alro aoba aoca aoce aoki aola aole aora aorb arab arac arae arai arak aral arar arba arbe arbi arc- arca arce