-er -th a-a a-b a-c a-t aaa aab aac aae aah aao aar aat ab- aba abb abc abe abh abo abr abt ac- aca acb acc ace ach aco acr act aea aeb aec aee aeh aeo aer aet aha ahb ahc ahe ahh aho ahr aht aoa aob aoc aoe aoh aoo aor aot ar- ara arb arc are arh aro arr art at- ata atb atc ate ath ato atr att baa bab bac bae bah bao bar bat bba bbb bbc bbe bbh bbo bbr bbt bca bcb bcc bce bch bco bcr bct be- bea beb bec bee beh beo ber bet bha bhb bhc bhe bhh bho bhr bht boa bob boc boe boh boo bor bot bra brb bre brh bro brr brt bta btb btc bte bth bto btr btt c-- caa cab cac cae cah cao car cat cba cbb cbc cbe cbh cbo cbr cbt cca ccb ccc cce cch cco ccr cct ce- cea ceb cec cee ceh ceo cer cet ch- cha chb chc che chh cho chr cht co- coa cob coc coe coh coo cor cot cra crb crc cre crh cro crr crt cta ctb ctc cte cth cto ctr ctt eaa eab eac eae eah eao ear eat eba ebb ebc ebe ebh ebo ebr ebt ec- eca ecb ecc ece ech eco ecr ect eea eeb eec eee eeo eer eet eha ehb ehc ehe ehh eho ehr eht eo- eoa eob eoc eoe eoh eoo eor eot era erb erc ere erh ero err ert eta etb etc ete eth eto etr ett haa hab hac hae hah hao har hat hba hbb hbc hbe hbh hbo hbr hbt hca hcb hcc hce hch hco hcr hct he- hea heb hec hee heh heo her het hha hhb hhc hhe hhh hho hhr hht hoa hob hoc hoe hoh hoo hor hot hr- hra hrb hrc hre hrh hro hrr hrt hta htb htc hte hth hto htr htt oaa oab oac oae oah oao oar oat ob- oba obb obc obe obh obo obr obt oc- oca ocb occ och oco ocr oct oea oeb oec oee oeh oeo oer oet oha ohc ohe ohh oho ohr oht oo- ooa oob ooc ooh ooo oor oot or- ora orb orc ore orh oro orr ort ot- ota otb otc ote oth oto otr ott ra- raa rab rac rae rah rao rar rat rba rbb rbc rbe rbh rbo rbr rbt rca rcb rcc rce rch rco rcr rct re- rea reb rec ree reh reo rer ret rh- rha rhb rhc rhe rhh rho rhr rht roa rob roc roe roh roo ror rot rra rrb rrc rrh rrr rrt rta rtb rtc rte rto rtr rtt taa tab tac tae tah tao tar tat tba tbb tbc tbe tbh tbo tbr tbt tca tcb tcc tce tch tco tcr tct te- tea teb tec tee teh teo ter tet th- tha thb thc the thh tho thr tht to- toa tob toc toe toh too tor tot tra trb trc tre trh tro trr trt tta ttb ttc tte tth tto ttr ttt

a-be a-ha aaaa aaab aaac aaae aaah aaar aaba aabb aabc aabh aabt aaca aacb aacc aace aach aaco aacr aact aaea aaec aaha aaoe aaoo aara aarc aare aaro aart aata aatc aatt abaa abab abac abae abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abch abcr abct abec abee aber abet abha abho abhr aboa abob aboh aboo abor abot abra abrc abro abta ac-t acaa acab acac acae acar acat acba acca accc acce acch acco acct ace- acea acec aceh acer acet acha ache achh acho achr acht acoa acoe acoh acor acot acr- acra acrc acre acro acrr acta actc acte acth acto actt aeac aecb aect aeer aer- aera aerc aero aeta aetc aeto aetr aett ahab ahac ahah ahar ahat ahet ahha ahoa ahoe ahor ahot ahra ahrc ahre ahrr ahta ahte ahto aoah aoba aoca aoce aora aorb aort aotc arab arac arae arah arar arat arba arbe arbh arc- arca arce arch arco arct area arec aree areh areo aret arh- aroa arob aroe aroo aror arr- arra arrc arre arrh arro arrr arrt arta artc arte arth arto artr at-t ataa atab atac atae atar atat atca atcc atch atco atcr atea atec atee ateo ater atha athe atho atob atoc atoe ator atot atra atrc atre atro atta atte atto attr baaa baah baar baat baba babb babe babo babr bac- baca bacc bace bach baco bact baer baha baho bahr baht baoh bar- bara barb barc bare barh baro barr bart bata batc bate bath bato batt bbbb bbch bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcec bcer bcet bche bcor bcra bctc beah bear beat beba bebb bebe bebo beca bech beeb beer beet behr beo- beor beot bera berc bere bero berr bert beta betc bete beth beto bett bhao bhar bhat bhca bhcc bher bhet bhor bhot bhra bhrt boab boac boar boat boba bobb bobe bobo boca boce boch boco boea boec boee boeo boer boet boha boho bohr boht boob booc booe booh boor boot bor- bora bore borh boro borr bort bota botb bote both boto bott brab brac brae brah brao brat brca brcb brce brea breb brec bree breo brer bret broa brob broc broe broh broo bror brot brrr brtc btaa btcc btec btob btor btrc btrt bttb c-bo caaa caab caac caah caat caba cabe cabo cac- caca cacc cace cach caco cacr caec caer caha cahe caht caor cara carb carc care caro carr cart cat- cata catb catc cate cath cato catt cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbha cbot cbre cbrh cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccee ccha cche