5 sub { '1st-1' . rec('000') },
10 sub { '1st-2' . rec('000') },
15 sub { '2nd-1:' . rec('000') },
17 sub { rec(210,'a') . rec('210','e') },
20 sub { '2nd-2:' . rec('000') },
22 sub { rec(220,'a') . rec('220','e') },
25 sub { '2nd-3:' . rec('000') },
27 sub { rec(230,'a') . rec('230','e') },
30 sub { "3rd:" . rec('000') },