C21111113313132322331323331323113313233313331323132321133131323121   >>    C2111111331313232233132333132311331323331333132313232113313132312   <<    C21111113313132322331323331323113313233313331323132321133131323123   >>      C21111113313132322331323331323113313233313331323132321133131323122   >>