d = 'NESW'
def dir(a, b):
    a = d.find(a)
    b = d.find(b)
    return (a - b + 4) % 4
    

T = int(input())
for _ in range(T):
    ans = []
    ind = 'N'
    m = int(input())
    for i in range(m):
        x, y = input().split()
        z = dir(ind, x)
        for j in range(z): ans.append(['L'])
        ans.append(['Z', y])
        ind = x
    print(len(ans), 'N')
    for a in ans:
        print(*a)