Stuck on three, help please. 11d Duly qualified professional legal agent. (8,2,3) A?T?R???, ??, L?W. 20a One who thinks he is the most important in a group. (4,2,3,4) C?C?, O?, T?E, ????. 19a Russian armed soldier of the 16th and 17th centuries. (8) ?T???I?Z. Thanks in advance for any help.