two, 1;
three, 1 2;
four, 2;
five, 2 3;
six, 2 3 4;
seven, 3 4;
eight, 3 4 5;
nine, 3 4 5 6;
ten, 4 5 6;
eleven, 4 5 6 7;
twelve, 4 5 6 7 8;
thirteen, 5 6 7 8;
fourteen, 4 5 6 7;
fifteen, 5 6 7 8 9;
sixteen, 6 7 8 9 10;
