def test2(self): self.assertEqual('R', triangle('RRR'))
def test1(self): self.assertEqual('R', triangle('GB'))
def test5(self): self.assertEqual('B', triangle('B'))
def test5(self): self.assertEqual('G', triangle('RBRGBRBGGRRRBGBBBGG'))
def test4(self): self.assertEqual('G', triangle('RBRGBRB'))
def test3(self): self.assertEqual('B', triangle('RGBG'))