C1212121231123232233131323223313233313231323222233131323132322231   >>    C121212123112323223313132322331323331323132322223313132313232223   <<    C1212121231123232233131323223313233313231323222233131323132322233   >>      C1212121231123232233131323223313233313231323222233131323132322232   >>