C12121223131323223313233231323132322331313132322132313231323132312111   >>    C1212122313132322331323323132313232233131313232213231323132313231211   <<    C12121223131323223313233231323132322331313132322132313231323132312113   >>      C12121223131323223313233231323132322331313132322132313231323132312112   >>