floors = int(input())
rooms_per_floor = int(input())

for f in range(floors+1, 0, -1):
    if f % 2 == 0 and f < floors:
        for o in range(0, rooms_per_floor):
            print(f"O{f}{o}", end=" ")
        print("\n")
    elif f % 2 != 0 and f < floors:
        for a in range(0, rooms_per_floor):
            print(f"A{f}{a}", end=" ")
        print("\n")
    elif f == floors:
        for l in range(0, rooms_per_floor):
            print(f"L{f}{l}", end=" ")
        print("\n")