a-a a-b aaa aab aah aan aao aar aau aax aay ab- aba abb abh abn abo abr abu abx aby aha ahb ahh ahn aho ahr ahu ahx ahy an- ana anb anh ann ano anr anu anx any aoa aob aoh aon aoo aor aou aox ar- ara arb arh arn aro arr aru arx ary au- aua aub auh aun auo aur aux ax- axa axh axn axo axr axx ay- aya ayh ayn ayo ayr ayu ayx b-u baa bab bah ban bao bar bau bax bay bba bbb bbh bbn bbo bbr bbu bbx bby bha bhb bhh bho bhr bhu bhx bna bnb bnn bno bnr bnu bnx boa bob boh bon boo bor bou box boy bra brb brh brn bro brr bru brx bry bua bub buh bun buo bur buu bux buy bxb bxn bxo bxx by- bya byh byn byo byr byu haa hab hah han hao har hau hax hay hba hbb hbh hbn hbo hbr hbu hbx hby hha hhb hhh hhn hho hhr hhu hhy hna hnb hnh hnn hno hnu hny hoa hob hoh hon hoo hor hou hox hoy hr- hra hrb hrh hrn hro hrr hru hua hub huh hun huo hur huu hux huy hy- hya hyb hyh hyn hyo hyr hyy naa nab nah nan nao nar nau nax nay nba nbb nbn nbo nbr nbu nbx nha nhb nhh nhn nhr nhu nhy nna nnb nnh nnn nno nnu no- noa nob noh non noo nor nou nox noy nra nrb nrn nro nrr nru nrx nry nua nub nuh nun nuo nur nuu nux nuy nya nyn nyo nyu nyx nyy oaa oab oah oan oao oar oau oax ob- oba obb obh obn obo obr obu obx oby oha ohh ohn oho ohr ohu on- ona onb onh onn ono onr onu onx ony oo- ooa oob ooh oon ooo oor oox or- ora orb orh orn oro orr oru orx ory ou- oua ouh oun ouo our ox- oxa oxb oxn oxo oxx oxy oya oyo ra- raa rab rah ran rao rar rau rax ray rba rbb rbh rbn rbo rbr rbu rbx rh- rha rhb rhh rhn rho rhr rhu rna rnb rnh rnn rno rnr rnu rny roa rob roh ron roo ror rou rox roy rra rrb rrh rrn rrr rru rua rub ruh run ruo rur ruu rux ruy rxr ry- rya ryn ryo ryr ryu ryy ua- uaa uab uah uan uao uar uau uay uba ubb ubh ubn ubo ubr ubu ubx uby uha uhb uhh uho uhr uhu uhy un- una unb unh unn uno unr unu unx uny uoa uob uon uoo uor uox ur- ura urb urn uro urr uru urx ury uua uun uur uuu uxb uxo uxr uxu uyo uyu xaa xan xar xau xbr xbx xna xno xnu xoa xon xoo xor xox xrx xry xun xxo xxx xxy xyr xyy yaa yab yah yan yao yar yau yax yay ybr yby yha yhu yna ynn ynu yny yob yon yoo yor you yox yoy yra yrn yro yru yua yuh yun yuo yur yuu yux yuy yxa yxy yyb yyu yyy