A X draw
A Y win
A Z loss

B X loss
B Y draw
B Z win

C X win
C Y loss
C Z draw

#########

1 1 draw
1 2 win
1 3 loss <-- !!

2 1 loss
2 2 draw
2 3 win

3 1 win <-- !!
3 2 loss
3 3 draw

########

1 1 draw
1 2 win
1 0 loss <-- !!

1 0 loss
1 1 draw
1 2 win

1 0 win <-- !!
1 1 loss
1 2 draw

#################
part2
################

0 X lose: 2  => 3pts  == 0 + 3 - 1 mod 3 = 2
0 Y draw: 0  => 1pts  == 0 + 3 - 0 mod 3 = 0
0 Z win:  1  => 2pts  == 0 + 3 + 1 mod 3 = 1

1 X lose: 0  =>       == 1 + 3 - 1 mod 3 = 0
1 Y draw: 1           == 1 + 3 + 0 mod 3 = 1
1 Z win:  2           == 1 + 3 + 1 mod 3 = 2

2 X lose: 1           == 2 + 3 - 1 mod 3 = 1
2 Y draw: 2           == 2 + 3 + 0 mod 3 = 2
2 Z win:  0           == 2 + 3 + 1 mod 3 = 0