Alphabet Layers In Python

How to multiply layers without ankwardly repeating elif lines? Cannot get += 1 working. Or perhaps different string approach? I'm certainly new in Python.

layer = int(input("Give a number between 2 and 26: "))
table_size = layer + layer - 1
ts = table_size
center = (ts // 2)

for row in range(ts):
        for col in range(ts):
                if  row == col == (center):
                        print("A", end="")

                elif  (row > center  or col > center \
                or row < center or col < center) \
                and row < center + 2 and row > center - 2 \
                and col < center + 2 and col > center - 2 :
                        print("B", end="")

                elif  (row > center+1 or col > center+1 \
                or row < center-1 or col < center-1) \
                and row < center+3 and row > center-3 \
                and col < center+3 and col > center-3 :
                        print(chr(67), end="")

                else:
                        print(" ", end="")
        print()

CCCCC
CBBBC
CBABC
CBBBC
CCCCC