a-a a-b aaa aab aae aah aaj aak aan ab- aba abb abe abh abj abk abn aea aeb aee aeh aej aek aen aha ahb ahe ahh ahj ahk ahn aja ajb aje ajh ajj ajk ajn aka akb ake akh akj akk akn an- ana anb ane anh anj ank ann baa bab bae bah baj bak ban bba bbb bbe bbh bbk bbn be- bea beb bee beh bek ben bha bhb bhe bhh bhj bhk bja bjj bjk bjn bka bkb bke bkk bkn bna bnb bne bnj bnk bnn eaa eab eae eah eaj eak ean eba ebb ebe ebh ebj ebk ebn eea eeb eee eek een eha ehb ehe ehh ehn eja eka ekb eke ekh en- ena enb ene enh enk enn haa hab hae hah haj hak han hba hbb hbe hbh hbj hbk hbn he- hea heb hee heh hej hek hen hha hhb hhe hhh hhj hhk hhn hja hjk hjn hka hkb hkh hkk hkn hna hnb hne hnh hnj hnk hnn jaa jab jae jah jaj jak jan jba jbj jbk jea jeb jee jeh jej jek jen jha jhe jhj jhn jja jjb jjj jjk jka jkb jkh jkk jkn jna jne jnh jnj jnn ka- kaa kab kae kah kaj kak kan kba kbb kbe kbh kbk kbn ke- kea keb kee keh kek ken kha khe khh khj khk khn kjb kje kkb kke kkh kkk kkn kn- kna kne knk knn naa nab nae nah naj nak nan nba nbb nbe nbk nbn ne- nea neb nee neh nej nek nen nha nhb nhe nhh nhj nhk nhn nja nje njk njn nka nke nkj nkk nkn nna nnb nne nnh nnk nnn