a-a a-b a-q aaa aab aae aah aan aaq ab- aba abb abe abh abn abq aea aeb aee aeh aen aeq aha ahb ahe ahh ahn ahq an- ana anb ane anh ann anq aqa aqn baa bab bae bah ban baq bba bbb bbe bbh bbn bbq be- bea beb bee beh ben beq bha bhb bhe bhh bhq bna bnb bne bnn bqe eaa eab eae eah ean eba ebb ebe ebh ebn ebq eea eeb eee een eha ehb ehe ehh ehn en- ena enb ene enh enn eqa eqe eqn eqq haa hab hae hah han haq hba hbb hbe hbh hbn he- hea heb hee heh hen hha hhb hhe hhh hhn hna hnb hne hnh hnn naa nab nae nah nan nba nbb nbe nbn ne- nea neb nee neh nen nha nhb nhe nhh nhn nna nnb nne nnh nnn qaa qah qan qba qbe qbq qee qeh qen qnb qne qnh qqq