C21221212121211331313232233131333133112212323132313231313213231   >>    C2122121212121133131323223313133313311221232313231323131321323   <<    C21221212121211331313232233131333133112212323132313231313213233   >>      C21221212121211331313232233131333133112212323132313231313213232   >>