-al -er -ic a-a a-b a-c a-i aaa aab aac aae aaf aai aak aal aar ab- aba abb abc abe abf abi abk abl abr ac- aca acb acc ace acf aci ack acl acr aea aeb aec aee aef aei aek ael aer af- afa afb afc afe aff afi afk afl afr ai- aia aib aic aie aif aii aik ail air aka akb akc ake aki akk akl akr al- ala alb alc ale alf ali alk all alr ar- ara arb arc are arf ari ark arl arr baa bab bac bae baf bai bak bal bar bba bbb bbc bbe bbf bbi bbk bbl bbr bca bcb bcc bce bcf bci bck bcl bcr be- bea beb bec bee bef bei bek bel ber bfa bfb bfc bfe bff bfi bfl bfr bi- bia bib bic bie bif bii bik bil bir bka bkb bkc bke bkf bkk bkl bkr bla blb blc ble blf bli blk bll blr bra brb bre brf bri brk brl brr c-- caa cab cac cae caf cai cak cal car cba cbb cbc cbe cbf cbi cbk cbl cbr cca ccb ccc cce ccf cci cck ccl ccr ce- cea ceb cec cee cef cei cek cel cer cfa cfb cfc cfe cff cfi cfk cfl cfr ci- cia cib cic cie cif cii cik cil cir cka ckb ckc cki cl- cla clb clc cle clf cli clk cll clr cra crb crc cre crf cri crk crl crr eaa eab eac eae eaf eai eak eal ear eba ebb ebc ebe ebf ebi ebk ebl ebr ec- eca ecb ecc ece ecf eci eck ecl ecr eea eeb eec eee eef eek eel eer ef- efa efb efc efe eff efi efl efr eia eib eic eie eif eii eik eil eir eka ekb ekc eke ekf eki ekl ekr ela elb elc ele elf eli elk ell elr era erb erc ere erf eri erk erl err faa fab fac fae faf fai fak fal far fba fbb fbc fbe fbf fbi fbk fbl fbr fca fcb fcc fce fcf fci fck fcl fcr fea feb fec fee fef fei fek fel fer ffa ffc ffe fff ffi ffk ffl ffr fia fib fic fie fif fii fik fil fir fka fkb fkc fkf fki fkk fkl fla flb flc fle flf fli fll flr fra frb frc fre frf fri frk frl frr i-f ia- iaa iab iac iae iaf iai ial iar iba ibb ibc ibe ibf ibi ibk ibl ibr ica icb icc ice icf ici ick icl icr ie- iea iec iee ief iei iek iel ier ifa ifb ifc ife iff ifi ifl ifr iia iib iic iie iif iii iil iir ika ikb ikc ike ikf iki ikk ikl ikr il- ila ilb ilc ile ilf ili ilk ill ilr ir- ira irb irc ire irf iri irk irl irr ka- kaa kab kac kae kaf kai kak kal kar kba kbb kbc kbe kbf kbi kbk kbl kbr kca kcb kcc kce kci kck kcl kcr ke- kea keb kec kee kef kei kek kel ker kfa kfc kff kfi kia kib kic kie kif kii kik kil kir kkb kkc kke kki kkk kkl kkr kl- kla klb klc klf kli klr kra krc krf kri krk krl krr la- laa lab lac lae laf lai lak lal lar lba lbb lbc lbe lbf lbi lbk lbl lbr lca lcb lcc lce lcf lci lck lcl lcr lea leb lec lee lef lei lek lel ler lfa lfb lfc lfe lff lfi lfk lfl lfr lia lib lic lie lif lii lik lil lir lka lkb lkl lkr lla llb llc lle llf lli llk lll llr lra lrb lrc lrf lri lrk lrr ra- raa rab rac rae raf rai rak ral rar rba rbb rbc rbe rbf rbi rbk rbl rbr rca rcb rcc rce rcf rci rcl rcr re- rea reb rec ree ref rei rek rel rer rfa rfb rfc rfe rff rfi rfk rfl rfr ria rib ric rie rif rii rik ril rir rkb rkc rke rkf rkk rla rlc rle rlf rli rll rlr rra rrb rrc rrf rri rrk rrl rrr

a-ak a-be a-ii aaaa aaab aaac aaae aaaf aaai aaal aaar aaba aabb aabc aabi aabl aaca aacb aacc aace aacf aaci aack aacl aacr aaea aaec aafa aafb aafc aaff aafi aafl aaib aaic aaii aaka aake aala aalc aale aali aall aara aarc aare aari abaa abab abac abae abaf abai abak abal abar abb- abba abbb abbe abbi abbr abca abcb abcc abcf abci abcl abcr abec abee abel aber abff abia abib abic abie abil abir abla able abra abrc abri acaa acab acac acae acai acar acba acbl acca accc acce accf acci ace- acea acec acek acel acer acfc acfe acfi acfl aci- acia acic acie acif acir acke acla aclc acle acli aclr acr- acra acrc acre acri acrr aeac aeaf aebi aecb aeci aecl aeer aeka aela aelc aer- aera aerc aeri afaa afak afar afca afcb afcc afci afee afek afel afer affa affc affi afia afib afif afik afil afir afka afkr afla aflc afle afr- afra afrc afre afri aiai aiba aibl aica aicc aice aicf aicr aiea aiee aiel aiff aifl aiia aiib aiic aiir aika aike aiki aila aile aili aira aire airi akaa akae akai akal akar akca akee akel aker akia akie akif akik akil akir akka akki akle akr- akra akre alaa alac alae alai alak alal alar alb- alba albc albe albi alca alcc alce alea alec alee alef alek aler alfa alfe alfi ali- alia alib alie alif alii alik alil alir alk- alka alkb alke alki all- alla alle alli alll allr arab arac arae araf arai arak aral arar arba arbe arbi arc- arca arce arci area arec aree aref arei arek arel arfa arfb arfc arff