ft S 1 ft S 2 ft S 4 ft S 8 ft S 16 ft A 1 ft A 2 ft A 4 ft A 8 ft A 16 ft A 32 ft A 64 ft A 128 ft B 1 ft B 2 ft B 4 ft B 8 ft B 16 ft B 32 ft B 64 ft B 128 ft C 1 ft C 2 ft C 4 ft C 8 ft C 16 ft C 32 ft C 64 ft C 128
