C1212121231123232233131323223313231333132333132322331323331313233321   >>    C121212123112323223313132322331323133313233313232233132333131323332   <<    C1212121231123232233131323223313231333132333132322331323331313233323   >>      C1212121231123232233131323223313231333132333132322331323331313233322   >>