C121122333132233131232313113313222313231323133313232212323311231   >>    C12112233313223313123231311331322231323132313331323221232331123   <<    C121122333132233131232313113313222313231323133313232212323311233   >>      C121122333132233131232313113313222313231323133313232212323311232   >>