-al -er -ol a-a a-b a-c aaa aab aac aae aah aal aao aar aau ab- aba abb abc abe abh abl abo abr abu ac- aca acb acc ace ach acl aco acr acu aea aeb aec aee aeh ael aeo aer aeu aha ahb ahc ahe ahh ahl aho ahr ahu al- ala alb alc ale alh all alo alr alu aoa aob aoc aoe aoh aol aoo aor aou ar- ara arb arc are arh arl aro arr aru au- aua aub auc aue auh aul auo aur b-u baa bab bac bae bah bal bao bar bau bba bbb bbc bbe bbh bbl bbo bbr bbu bca bcb bcc bce bch bcl bco bcr bcu be- bea beb bec bee beh bel beo ber beu bha bhb bhc bhe bhh bhl bho bhr bhu bla blb blc ble blh bll blo blr blu boa bob boc boe boh bol boo bor bou bra brb bre brh brl bro brr bru bua bub buc bue buh bul buo bur buu c-- caa cab cac cae cah cal cao car cau cba cbb cbc cbe cbh cbl cbo cbr cbu cca ccb ccc cce cch ccl cco ccr ccu ce- cea ceb cec cee ceh cel ceo cer ceu ch- cha chb chc che chh chl cho chr chu cl- cla clb clc cle clh cll clo clr clu co- coa cob coc coe coh col coo cor cou cra crb crc cre crh crl cro crr cru cua cub cuc cue cuh cul cuo cur cuu eaa eab eac eae eah eal eao ear eau eba ebb ebc ebe ebh ebl ebo ebr ebu ec- eca ecb ecc ece ech ecl eco ecr ecu eea eeb eec eee eel eeo eer eha ehb ehc ehe ehh ehl eho ehr ehu ela elb elc ele elh ell elo elr elu eo- eoa eob eoc eoe eoh eol eoo eor eou era erb erc ere erh erl ero err eru eu- eua eub euc eue eul eur haa hab hac hae hah hal hao har hau hba hbb hbc hbe hbh hbl hbo hbr hbu hca hcb hcc hce hch hcl hco hcr he- hea heb hec hee heh hel heo her heu hha hhb hhc hhe hhh hhl hho hhr hhu hla hlb hlc hle hlh hll hlo hlr hlu hoa hob hoc hoe hoh hol hoo hor hou hr- hra hrb hrc hre hrh hrl hro hrr hru hua hub huc hue huh hul huo hur huu la- laa lab lac lae lah lal lao lar lau lba lbb lbc lbe lbh lbl lbo lbr lbu lca lcb lcc lce lch lcl lco lcr lcu lea leb lec lee leh lel leo ler leu lha lhb lhc lhh lho lhr lhu lla llb llc lle lll llo llr llu loa lob loc loe loh lol loo lor lou lra lrb lrc lrh lro lrr lru lua lub luc lue luh lul luo lur luu oaa oab oac oae oah oal oao oar oau ob- oba obb obc obe obh obl obo obr obu oc- oca ocb occ och ocl oco ocr ocu oea oeb oec oee oeh oel oeo oer oha ohc ohe ohh ohl oho ohr ohu ola olb olc ole oll olo olu oo- ooa oob ooc ooh ool ooo oor or- ora orb orc ore orh orl oro orr oru ou- oua ouc oue ouh oul ouo our ra- raa rab rac rae rah ral rao rar rau rba rbb rbc rbe rbh rbl rbo rbr rbu rca rcb rcc rce rch rcl rco rcr rcu re- rea reb rec ree reh rel reo rer reu rh- rha rhb rhc rhe rhh rhl rho rhr rhu rla rlc rle rlh rll rlo rlr rlu roa rob roc roe roh rol roo ror rou rra rrb rrc rrh rrl rrr rru rua rub ruc rue ruh ruo rur ruu ua- uaa uab uac uae uah ual uao uar uau uba ubb ubc ube ubh ubl ubo ubr ubu uca ucb ucc uce uch ucl uco ucr ucu uea ueb uec uee ueh uel uer uha uhb uhc uhe uhh uhl uho uhr uhu ula ulb ulc ule ull ulo ulr ulu uoa uob uoc uoe uol uoo uor ur- ura urb urc ure url uro urr uru uua uuc uue uur uuu