C212212121212113313221323131323131323132322331323132233132333132333132212321   >>    C21221212121211331322132313132313132313232233132313223313233313233313221232   <<    C212212121212113313221323131323131323132322331323132233132333132333132212323   >>      C212212121212113313221323131323131323132322331323132233132333132333132212322   >>