C11111211113313112113313331333133313331333132212111133133313331322131232321   >>    C1111121111331311211331333133313331333133313221211113313331333132213123232   <<    C11111211113313112113313331333133313331333132212111133133313331322131232323   >>      C11111211113313112113313331333133313331333132212111133133313331322131232322   >>