import re

class Border:
    def __init__(self, top, right, bottom, left, left_all, right_all):
        self.top = top
        self.right = right
        self.bottom = bottom
        self.left = left
        self.left_all = left_all
        self.right_all = right_all

    def __str__(self):
        def sym(value, letter):
            return letter if value else ""
        T, R, B, L, l, r = self.top, self.right, self.bottom, self.left, self.left_all, self.right_all
        abbrev = f'{sym(T, "t")}{sym(R, "r")}{sym(B, "b")}{sym(L, "l")}{sym(l, "L")}{sym(R, "R")}'
        abbrev = re.sub(" ", "", abbrev)
        if abbrev:
            abbrev = f"|{abbrev}|"
        return f'<border{abbrev}>'

    def has(self):
        return [self.top, self.right, self.bottom, self.left]