A
[i for i in range(0,9099) if len(set("{:04d}".format(i)))==4]Size: a a a
A
[i for i in range(0,9099) if len(set("{:04d}".format(i)))==4]A
AT
A
A
AT
AT
b
AT
[x for x in range(9999) if len(set(f"{x:04}")) == 4]b
A
[x for x in range(9999) if len(set(f"{x:04}")) == 4]A
A
A
A
AT
AT
AT