Gc Perm
Adjacent corner swap: Two neighbouring corners swap (plus edges); comes up 1 in 18 solves.
Algorithms
R2 u' R U' R U R' u R2 y R U' R'reads as R2 u' · ZagZig · R' u R2 y · InsertR2 U' R U' R U R' U R2 U D' R U' R' Dreads as R2 U' R U' · Su · R2 U D' · Insert · D