a-a a-b aaa aab aae aah aaj aan ab- aba abb abe abh abj abn aea aeb aee aeh aej aen aha ahb ahe ahh ahj ahn aja ajb aje ajh ajj ajn an- ana anb ane anh anj ann baa bab bae bah baj ban bba bbb bbe bbh bbn be- bea beb bee beh ben bha bhb bhe bhh bhj bja bjj bjn bna bnb bne bnj bnn eaa eab eae eah eaj ean eba ebb ebe ebh ebj ebn eea eeb eee een eha ehb ehe ehh ehn eja en- ena enb ene enh enn haa hab hae hah haj han hba hbb hbe hbh hbj hbn he- hea heb hee heh hej hen hha hhb hhe hhh hhj hhn hja hjn hna hnb hne hnh hnj hnn jaa jab jae jah jaj jan jba jbj jea jeb jee jeh jej jen jha jhe jhj jhn jja jjb jjj jna jne jnh jnj jnn naa nab nae nah naj nan nba nbb nbe nbn ne- nea neb nee neh nej nen nha nhb nhe nhh nhj nhn nja nje njn nna nnb nne nnh nnn