a-a a-b a-c aaa aab aac aae aak ab- aba abb abc abe abk ac- aca acb acc ace ack aea aeb aec aee aek aka akb akc ake akk baa bab bac bae bak bba bbb bbc bbe bbk bca bcb bcc bce bck be- bea beb bec bee bek bka bkb bkc bke bkk c-- caa cab cac cae cak cba cbb cbc cbe cbk cca ccb ccc cce cck ce- cea ceb cec cee cek cka ckb ckc eaa eab eac eae eak eba ebb ebc ebe ebk ec- eca ecb ecc ece eck eea eeb eec eee eek eka ekb ekc eke ka- kaa kab kac kae kak kba kbb kbc kbe kbk kca kcb kcc kce kck ke- kea keb kec kee kek kkb kkc kke kkk

a-ak a-be aaaa aaab aaac aaae aaba aabb aabc aaca aacb aacc aace aack aaea aaec aaka aake abaa abab abac abae abak abb- abba abbb abbe abca abcb abcc abec abee acaa acab acac acae acba acca accc acce ace- acea acec acek acke aeac aecb aeka akaa akae akca akee akka baaa baak baba babb babe bac- baca bacc bace back baek bak- baka bake bbbb bbeb bcaa bcbc bcca bccc bcec beak beba bebb bebe beca beck beeb beek beka beke caaa caab caac caba cabe cac- caca cacc cace cack caec caka cake cbac cbbc cbca cbcc cbce cbea cbec cbee cbka ccaa ccab ccac ccba ccbc ccca cccb cccc ccee ceac ceba cec- ceca cece ceeb ceec ceke ckac ckbc ckbe ckck eaba eaca eacc eaec ebac ebba ebbc ebcc ecaa ecac ecbc ecbe ecca eccb eccc ecce ecka eeca eeea eeee eeka eeke eka- ekab ekeb ekek ekka kaaa kaab kaak kaba kabb kabc kabe kacb kacc kace kaka kakc kake kakk kbaa kbab kbac kbae kbak kbba kbbb kbbc kbbe kbbk kbca kbcb kbce kbck kbeb kbec kbee kbek kbkb kbkk kcaa kcab kcac kcba kcbc kcbk kcca kccb kccc kcck kcea kceb kcec kcee kckc kckk kea- keak keba kebb kebc kebe keca keck keek keka kekb kekc keke kkaa kkac kkba kkbb kkbe kkcb kkck kkea kkkk

-aaa- aaace aaaee aabaa aabba aacbc abaab ababa ababe abaca aback abaka abake abbac abccc abeba abebe abece acaca acacb acack acake aceae ackee aeaea aebbe aka-e akaba akce baabe baake babak babec babee babek babka bacab bacca bacea back- backa backe bakea bakka bakke bbbee beack bebek becak becca becke beeac beebe beeke bekaa bekka bekke c-a-c ca-ca caaba cacak caec- caeca ccccc ceace cebec cecka ceeac eecca eecke eeeee kaaba kabaa kabab kabak kabba kacee kakae kakka kakke kebab kebbe kebek kecak kekec

aaaaba abacab abbace ackack aeacea akbaba akeake akkaba baabaa bababe bacaba baekke bakebe bbbbbb beback beebea beebee caback cabeca cakcak ceecee ecbacc kaback kabaka kakkak

ack-ack aka-bea akeback bac-cab backake baeckea bbbbbbb cabback kacabac kee-kee

bbbbbbbb

a-bee-cee abakabaka baabaabaa beebeebee keek-keek

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc