C121212123112323223313132322331323132333132322133112323132313231121   >>    C12121212311232322331313232233132313233313232213311232313231323112   <<    C121212123112323223313132322331323132333132322133112323132313231123   >>      C121212123112323223313132322331323132333132322133112323132313231122   >>