C1212121231123232233131323223313233313231323222313231323132313233321   >>    C121212123112323223313132322331323331323132322231323132313231323332   <<    C1212121231123232233131323223313233313231323222313231323132313233323   >>      C1212121231123232233131323223313233313231323222313231323132313233322   >>