C21111113313132322331323331323113313233313331323133313232213321   >>    C2111111331313232233132333132311331323331333132313331323221332   <<    C21111113313132322331323331323113313233313331323133313232213323   >>      C21111113313132322331323331323113313233313331323133313232213322   >>