1 2 3 4 5 6 7 8 9 10
0 1 a {A|B} 1 2 <eps> a 2 3 a {AA|B} 3 2 <eps> a 2 4 b {A|B} 4 0 <eps> b 0 5 b {A|B} 5 0 <eps> b 0 2