is (1)is (2)is (3)is (4)is (7)is (6)is (5)is (8)is (9)is (10)is (11)is (13)is (14)is (15)is (12)is (17)is (16)is (18)is (19)is (20)is (21)is (23)is (22)is (24)is (25)is (26)is (27)is (28)is (29)is (33)is (32)is (31)is (30)is (34)is (35)is (38)is (36)is (37)