There's always the prima Guide...I got a quick start though on the forward list:
PS2
1 = Square
2 = Triangle
3 = X
4 = Circle
XBox
1 = X
2 = Y
3 = A
4 = B
Forward Transistions
--------------------
D,R+1 - Behind
D,L+1 - Knees
D,R+4 - Knees
D,L+2 - Face Down
U,D,U+1 - Draw Sword
Sword Forward Transistions
--------------------------
D,R+1 - Behind
D,L+1 - Knees
D,D+2 - Face Down
Forward Chains
--------------
R,R+1 - Knee to Head
R,L+1 - Punch One
U,U+1 - Punch Two
L,L+1 - Kick One
D,D+1 - Kick to Nuts
R,R+2 - Heart Rip
L,L+2 - Brain Rip
D,D+2 - Rib Rip
R,L+2 - Thigh Rip
U,U+2 - Arm Rip
L,R+2 - Two Arm Rip
U,U+3 - Arm Rip Hip
L,R+3 - Two Arm Rip Hit
D,D+3 - Arm Break
Sword Forward Chains
--------------------
R,R+1 - Left Arm Slice
R,R+2 - Right Arm Slice
L,L+1 - Impale
L,L+2 - Impale Gut
Short Sword Forward Chains
--------------------------
L,L+3 - Head Stab
D,D+3 - Gut Stab
R,R+1 - Left Arm Slice
R,R+2 - Right Arm Slice
U,D,U+2 - Impale
U,U+3 - Impale Gut
Forward Finishers
-----------------
U,U+4 - Head Rip
L,L+4 - Neck Break
D,D+4 - Spine Rip
R,R+4 - Head Smash
R,L+4 - Torso Rip
R,R+3 - Arm Finish
L,L+3 - Two Arm Finish