C31211133313132313231323331313132313231313232233132333132333132322133313221111   >>    C3121113331313231323132333131313231323131323223313233313233313232213331322111   <<    C31211133313132313231323331313132313231313232233132333132333132322133313221113   >>      C31211133313132313231323331313132313231313232233132333132333132322133313221112   >>