C3121113331313231323132333131313231323131323223313233313232332313223311   >>    C312111333131323132313233313131323132313132322331323331323233231322331   <<    C3121113331313231323132333131313231323131323223313233313232332313223313   >>      C3121113331313231323132333131313231323131323223313233313232332313223312   >>