PE

bouquet = ('R', 'P', 'W', 'W', 'P', 'R', 'R', 'R')

def rotate(bouquet, k):
    new = ()
    l = len(bouquet)

    for i in range(l):
        new += (bouquet[(i+k)%l],)

    return new

def valentino_rec(bouquet, k):
    if len(bouquet) == 1:
        return bouquet[0]
    else:
        new = rotate(bouquet, k-1)
        return new[0] + valentino_rec(new[1:], k)