import sys


commands = {
	# empty space
	" " : (0, None),
	# actions
	"." : (1, "pass"),
	"f" : (1, "mr.forward()"),
	"l" : (1, "mr.turn_left()"),
	"r" : (1, "mr.turn_right()"),
	# subroutines
	"A" : (3, "proc_A()"),
	"B" : (3, "proc_B()"),
	"C" : (3, "proc_C()"),
	"D" : (3, "proc_D()"),
	# fixed repeaters
	"0" : (2, 0),
	"1" : (2, 1),
	"2" : (2, 2),
	"3" : (2, 3),
	"4" : (2, 4),
	"5" : (2, 5),
	"6" : (2, 6),
};

def main():
	print("def proc_" + "A" + ":");
	compile_section_A()
	print("    pass\n")

	for c in "BCD":
		print("def proc_" + c + ":");
		print("    pass\n")


def compile_section_A():
	stack = []
	stack.append((-1, 1))

	for l in sys.stdin:
		qb = False
		ls = len(l.rstrip())
		for i in range(ls):
			ci = l[i]
			if not ci in commands:
				print("Unknown symbol", i, ord(ci))
				ci = '.'
			cci = commands[ci]
			if cci[0] == 0:
				continue
			if not qb:
				while stack[-1][0] >= i:
					stack.pop()
					assert stack
				qb = True
			print("    " * stack[-1][1], end='');
			if cci[0] == 1 or cci[0] == 3:
				print(cci[1])
			elif cci[0] == 2:
				print("for _ in range(" + str(cci[1]) + "):")
				stack.append((i, stack[-1][1] + 1))
	pass

main()