-al -ol a-a a-b a-c a-t aaa aab aac aad aae aak aal aao aat ab- aba abb abc abd abe abk abl abo abt ac- aca acb acc acd ace ack acl aco act ad- ada adb adc add ade adk adl ado adt aea aeb aec aed aee aek ael aeo aet aka akb akc akd ake akk akl ako al- ala alb alc ald ale alk all alo alt aoa aob aoc aod aoe aok aol aoo aot at- ata atb atc atd ate atl ato att baa bab bac bad bae bak bal bao bat bba bbb bbc bbd bbe bbk bbl bbo bbt bca bcb bcc bcd bce bck bcl bco bct bda bdb bdc bdd bde bdk bdl bdo bdt be- bea beb bec bed bee bek bel beo bet bka bkb bkc bke bkk bkl bko bkt bla blb blc bld ble blk bll blo blt boa bob boc bod boe bok bol boo bot bta btb btc btd bte btk btl bto btt c-- caa cab cac cad cae cak cal cao cat cba cbb cbc cbd cbe cbk cbl cbo cbt cca ccb ccc ccd cce cck ccl cco cct cda cdb cdc cdd cde cdk cdl cdo cdt ce- cea ceb cec ced cee cek cel ceo cet cka ckb ckc ckd cko ckt cl- cla clb clc cld cle clk cll clo clt co- coa cob coc cod coe cok col coo cot cta ctb ctc ctd cte ctk ctl cto ctt daa dab dac dad dae dak dal dao dat dba dbb dbc dbd dbe dbk dbl dbo dbt dca dcb dcc dcd dce dck dcl dco dct dda ddb ddc ddd dde ddk ddl ddo ddt de- dea deb dec ded dee dek del deo det dka dkb dkc dke dkk dkl dko dkt dl- dla dlb dlc dld dle dlk dll dlo dlt doa dob doc dod doe dok dol doo dot dta dtb dtc dtd dte dtk dtl dto dtt eaa eab eac ead eae eak eal eao eat eba ebb ebc ebd ebe ebk ebl ebo ebt ec- eca ecb ecc ecd ece eck ecl eco ect ed- eda edb edc edd ede edk edl edo edt eea eeb eec eed eee eek eel eeo eet eka ekb ekc ekd eke ekl eko ekt ela elb elc eld ele elk ell elo elt eo- eoa eob eoc eod eoe eok eol eoo eot eta etb etc etd ete etk etl eto ett k-t ka- kaa kab kac kad kae kak kal kao kat kba kbb kbc kbd kbe kbk kbl kbo kca kcb kcc kcd kce kck kcl kct kda kdb kdc kde kdk kdl kdo kdt ke- kea keb kec ked kee kek kel keo ket kkb kkc kke kkk kkl kkt kl- kla klb klc kld klo klt koa kob koc kod koe kok kol koo kot kta ktb ktc kte ktk ktl kto ktt la- laa lab lac lad lae lak lal lao lat lba lbb lbc lbd lbe lbk lbl lbo lbt lca lcb lcc lcd lce lck lcl lco lct lda ldb ldc ldd lde ldk ldl ldo ldt lea leb lec led lee lek lel leo let lka lkb lkl lkt lla llb llc lld lle llk lll llo llt loa lob loc lod loe lok lol loo lot lta ltb ltc ltd lte ltk ltl lto ltt oaa oab oac oad oae oak oal oao oat ob- oba obb obc obd obe obk obl obo obt oc- oca ocb occ ocd ock ocl oco oct oda odb odc odd ode odl odo odt oea oeb oec oed oee oel oeo oet oka okb okc okd oke okk okl oko ola olb olc old ole olk oll olo olt oo- ooa oob ooc ood ook ool ooo oot ot- ota otb otc otd ote otk otl oto ott taa tab tac tad tae tak tal tao tat tba tbb tbc tbd tbe tbk tbl tbo tbt tca tcb tcc tcd tce tck tcl tco tct tda tdb tdc tdd tde tdk tdl tdo tdt te- tea teb tec ted tee tek tel teo tet tka tkb tkc tke tkk tkl tko tkt tla tlc tld tle tlk tll tlo tlt to- toa tob toc tod toe tok tol too tot tta ttb ttc ttd tte ttk ttl tto ttt

a-ak a-be a-do a-ok aaaa aaab aaac aaad aaae aaal aaba aabb aabc aabd aabl aabt aaca aacb aacc aacd aace aack aacl aaco aact aada aadc aade aadt aaea aaec aaka aake aala aalc aald aale aall aalo aaoe aaoo aata aatc aatk aatt abaa abab abac abad abae abak abal abat abb- abba abbb abbe abbo abbt abca abcb abcc abcd abcl abct abda abdo abec abed abee abel abet abla able ablo aboa abob abod abok abol aboo abot abta ac-t acaa acab acac acad acae acat acba acbl acca accc accd acce acco acct acda acdb acdc acde acdt ace- acea acec aced acek acel acet ackd acke acla aclc acle acoa acod acoe acol acot acta actc acte actl acto actt adaa adab adac adad adae adak adal adao adat adba adbc adcc adda addc addd adde addl addo adea adeb adee adel adeo adet adle adob adoc adod adoe adok adoo adot adta aeac aecb aecl aect aede aedt aeka aela aelc aeta aetc aeto aett akaa akae akal akao akca aked akee akel akka akko akle aklo akok akot akte alaa alac alad alae alak alal alao alat alb- alba albc albe albo alca alcc alce alco ald- alda alde aldl aldo alea alec aled alee alek aleo alet alk- alka alkb alkd alke alko all- alla alle alll allo aloa aloc alod aloe alok alol aloo alot alta alte alto aoba aoca aoce aola aole aotc aotd at-l at-t ataa atab atac atad atae atak atal atat atca atcc atck atcl atco atdt atea atec ated atee atel ateo atka atkt