... c(××✷✷, two-coloured of pattern 2 + 2), type d (×✷ × ✷, mixed two-coloured), type e(××✷, three-coloured of pattern 2 + 1 + 1), type f (×✷ ×, mixed three-coloured),type g (×✷♦, four-coloured or ... (××✷✷, two-coloured of pattern 2 + 2),type d (×✷ × ✷, mixed two-coloured), type e (××✷, three-coloured of pattern2 + 1 + 1), type f (×✷ ×, mixed three-coloured), type g (×✷♦, four-colouredor...