S = input()
print(['Yes', 'No']['L' in S[::2] or 'R' in S[1::2]]) S = input() S input() input print(['Yes', 'No']['L' in S[::2] or 'R' in S[1::2]]) print ['Yes', 'No']['L' in S[::2] or 'R' in S[1::2]] ['Yes', 'No'] 'Yes' 'No' 'L' in S[::2] or 'R' in S[1::2] 'L' in S[::2] 'L' S[::2] S ::2 2 'R' in S[1::2] 'R' S[1::2] S 1::2 1 2 S = input() input() S
S = input()
print(['Yes', 'No']['L' in S[::2] or 'R' in S[1::2]])