C3121113331313231323132333131313231323131323223313233313232331111   >>    C312111333131323132313233313131323132313132322331323331323233111   <<    C3121113331313231323132333131313231323131323223313233313232331113   >>      C3121113331313231323132333131313231323131323223313233313232331112   >>