For 44 cm block corners a 31 cm PASS block is to be positioned on the side of the 44 cm UNI block to take the interval to 25 cm (38 + 37 = 75 cm). On the side of the 50 cm UNI, having already positioned the 31 cm PASS on the 44 cm side, continue with 50 cm blocks. 31 cm PASS block packages have green straps.