C11111211113313112113313331333132313331322121111133313331323123313331311322321   >>    C1111121111331311211331333133313231333132212111113331333132312331333131132232   <<    C11111211113313112113313331333132313331322121111133313331323123313331311322323   >>      C11111211113313112113313331333132313331322121111133313331323123313331311322322   >>