(16, 14)
(17, 15)
(18, 16)
(19, 17)
(20, 18)
(21, 19)
(22, 20)
(23, 21)
(24, 22)
(25, 23)
(26, 24)
(36, 34)
(37, 35)
(38, 36)
(39, 37)
(40, 38)
(41, 39)
(42, 40)
(43, 41)
(44, 42)
(45, 43)
(46, 44)
(47, 45)
(48, 46)
(49, 47)
(50, 48)
(51, 49)
(52, 50)
(53, 51)
(54, 52)
(55, 53)
(56, 54)
(57, 55)
(58, 56)
(59, 57)
(60, 58)
(61, 59)
(62, 60)
(63, 61)
(64, 62)
(65, 63)
(66, 64)
(70, 68)
(71, 69)
(72, 70)
(73, 71)
(139, 137)
(295, 290)