a-a a-b a-t aaa aab aae aaj aao aat ab- aba abb abe abj abo abt aea aeb aee aej aeo aet aja ajb aje ajj ajo ajt aoa aob aoe aoj aoo aot at- ata atb ate ato att baa bab bae baj bao bat bba bbb bbe bbo bbt be- bea beb bee beo bet bja bjj bjt boa bob boe boj boo bot bta btb bte bto btt eaa eab eae eaj eao eat eba ebb ebe ebj ebo ebt eea eeb eee eeo eet eja ejo ejt eo- eoa eob eoe eoo eot eta etb ete etj eto ett jaa jab jae jaj jao jat jba jbj jbo jbt jea jeb jee jej jeo jet jja jjb jjj joa job joe joj joo jot jta jtb jte jtt oaa oab oae oaj oao oat ob- oba obb obe obj obo obt oea oeb oee oeo oet oja ojb oje ojo oo- ooa oob ooo oot ot- ota otb ote oto ott taa tab tae taj tao tat tba tbb tbe tbj tbo tbt te- tea teb tee tej teo tet tje tjo to- toa tob toe toj too tot tta ttb tte tto ttt