The 46 closed tours of squares and diamonds type with four slants are shown here in three groups of 12 and one of 10. They were formed from 36 LL-EE routes, which I numbered 1 to 36, and which by reflection in horizontal or vertical give corresponding PP-AA routes, hence the numbers below the diagrams. Each half-route is used in at least one tour.
A.
B.
C.
D.
