20-00 1 20B07 1 20C07 1 20E07 1 20E15 1 20E25 1 20E26 1 20E28 1 20E34,20E36 1 20E45 1 20F14 1 20F16 1 20F18 1 20F19 1 20F22 1 20F24 1 20F50 1 CC – groups 1 Chernikov groups 1 FC – groups 1 finiteness conditions 1 generalized nilpotent groups generalized soluble groups 1 infinite groups 1