C213211331333131212111133133313231333132323132313231333132323323221   >>    C21321133133313121211113313331323133313232313231323133313232332322   <<    C213211331333131212111133133313231333132323132313231333132323323223   >>      C213211331333131212111133133313231333132323132313231333132323323222   >>