-er -th a-a a-b a-t aaa aab aae aah aao aar aat aau ab- aba abb abe abh abo abr abt abu aea aeb aee aeh aeo aer aet aeu aha ahb ahe ahh aho ahr aht ahu aoa aob aoe aoh aoo aor aot aou ar- ara arb are arh aro arr art aru at- ata atb ate ath ato atr att atu au- aua aub aue auh auo aur aut b-u baa bab bae bah bao bar bat bau bba bbb bbe bbh bbo bbr bbt bbu be- bea beb bee beh beo ber bet beu bha bhb bhe bhh bho bhr bht bhu boa bob boe boh boo bor bot bou bra brb bre brh bro brr brt bru bta btb bte bth bto btr btt btu bua bub bue buh buo bur but buu eaa eab eae eah eao ear eat eau eba ebb ebe ebh ebo ebr ebt ebu eea eeb eee eeo eer eet eha ehb ehe ehh eho ehr eht ehu eo- eoa eob eoe eoh eoo eor eot eou era erb ere erh ero err ert eru eta etb ete eth eto etr ett etu eu- eua eub eue eur eut haa hab hae hah hao har hat hau hba hbb hbe hbh hbo hbr hbt hbu he- hea heb hee heh heo her het heu hha hhb hhe hhh hho hhr hht hhu hoa hob hoe hoh hoo hor hot hou hr- hra hrb hre hrh hro hrr hrt hru hta htb hte hth hto htr htt hua hub hue huh huo hur hut huu oaa oab oae oah oao oar oat oau ob- oba obb obe obh obo obr obt obu oea oeb oee oeh oeo oer oet oha ohe ohh oho ohr oht ohu oo- ooa oob ooh ooo oor oot or- ora orb ore orh oro orr ort oru ot- ota otb ote oth oto otr ott otu ou- oua oue ouh ouo our out ra- raa rab rae rah rao rar rat rau rba rbb rbe rbh rbo rbr rbt rbu re- rea reb ree reh reo rer ret reu rh- rha rhb rhe rhh rho rhr rht rhu roa rob roe roh roo ror rot rou rra rrb rrh rrr rrt rru rta rtb rte rto rtr rtt rtu rua rub rue ruh ruo rur rut ruu taa tab tae tah tao tar tat tau tba tbb tbe tbh tbo tbr tbt tbu te- tea teb tee teh teo ter tet teu th- tha thb the thh tho thr tht thu to- toa tob toe toh too tor tot tou tra trb tre trh tro trr trt tru tta ttb tte tth tto ttr ttt ttu tua tub tue tuh tuo tur tut tuu ua- uaa uab uae uah uao uar uat uau uba ubb ube ubh ubo ubr ubt ubu uea ueb uee ueh uer uet uha uhb uhe uhh uho uhr uht uhu uoa uob uoe uoo uor uot ur- ura urb ure uro urr urt uru uta utb ute uth uto utr utt utu uua uue uur uut uuu