20F24 7 20C07 3 20D10 2 20E45 2 Chernikov groups 2 20-00 1 20B07 1 20E07 1 20E15 1 20E25 1 20E26 1 20E28 1 20E34,20E36 1 20F14 1 20F16 1 20F17 1 20F18 1 20F18,20F05,20F24,16D10 1 20F19 1 20F22 1 20F50 1 CC – groups 1 Cocentralizer in a group. Groups with prescribed conjugacy classes: \(FC\)-groups. \(CC\)-groups. \(PC\)-groups. \(MC\)-groups 1 Conjugacy class 1 Dietzmann classes 1 FC – groups 1 Property R 1 Property S 1 \(FC\)-group 1 \(FC\)-groups 1