a-be a-ha aaaa aaab aaac aaae aaah aaar aaba aabb aabc aabh aaca aacb aacc aace aach aacr aaea aaec aage aagh aaha aara aarc aare abaa abab abac abae abag abar abb- abba abbb abbe abbr abca abcb abcc abch abcr abec abee aber abha abhr abra abrc acaa acab acac acae acag acar acba acca accc acce acch ace- acea acec aceh acer acga acgr acha ache achh achr acr- acra acrc acre acrr aeac aecb aeer aega aer- aera aerc agac agag agar agba agca agcc agce agea agee ager agga agge agha aghe agra agre ahab ahac ahah ahar ahha ahra ahrc ahre ahrr arab arac arae arag arah arar arba arbe arbh arc- arca arce arch area arec aree areg areh arga argb arge argh arh- arr- arra arrc arre arrg arrh arrr baaa baah baar baba babb babe babr bac- baca bacc bace bach baer baga bage bagg bagh baha bahr bar- bara barb barc bare barg barh barr bbbb bbch bbeb bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcec bcer bche bcra beag beah bear beba bebb bebe beca bech beeb beeg beer bega begg behr bera berc bere berg berr bgca bhag bhar bhca bhcc bher bhra brab brac brae brag brah brca brcb brce brea breb brec bree breg brer brrr caaa caab caac caah caba cabe cabg cac- caca cacc cace cach cacr caec caer caga cage cagg cagr caha cahe cara carb carc care carr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbga cbgb cbha cbre cbrh ccaa ccab ccac ccag ccar ccba ccbc ccca cccb cccc ccee ccga ccgc ccha cche cchr ccra ccrc ccre ccrg ceac cear ceba cec- ceca cece ceeb ceec cege cer- cera cerc cere cgac cgcc cgcg cger chaa chab chac chae chag chah char chca chce chch chea cheb chec chee cheh cher chgb chge chha chra chrb chrc chrr crab crac crag crar crbc crca crcc crce crcr cre- crea creb crec cree creg creh eaba eabh eaca eacc each eaec eaga eage eara earb eare earh ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce echa eche ecra ecrc ecrr eeca eeea eeee eega eera eerc eerg egaa egae egar egba egbe egcc egcg egcr egea egec egee eger eggb egge eggh eghe eghh egra egre ehaa ehcc ehea eheh eher ehre erba erbb erbe erca ercc erce erch ereb erec erer erg- erga ergg ergh erhc erra errc erre gaar gaba gabb gabe gabr gace gach gaea gaec gaer gaga gage gagg gaha gahe gara garb gare garg garr gbag gc-c gcaa gcbc gccc gcrg geab gear geba gebe geca gece geer gege gegg geha gera gerb gere gggg gghg ghar ghea ghee gheg grab grac grae grbr grcc grce grea greb grec gree greg grrr haab haag haar haba habe hace haec hag- haga hage hagg hagh haha hara harc hare harh harr hbag hbar hcbc hcca hccb hccc hcch hcgh heah hear hebb hebe hebr heca hech heeb heeg heer hega hege hegg hegh hehe hera herb herc here herg herr hgah hgar hggc hhaa hhgg hhhh hrac hree hrrc raab raag raba rabb rabe rac- raca racc race rach raec raeg raer raga rage ragg ragh raha rahe rahr rara rarb rare rbbb rbbr rbgh rcac rcbc rccb rccc rcga rcgc rchb rcrg rea- reac reae rear reba rebb rebe reca recc rece rech recr reeb rega rege regr reha rehb rehe rera rere rerg rgba rgbe rhae rhag rhbg rhce rhcg rhea rheb rhee rrah rrrr