C11111211113313112113313331333133313331312322121111133313331321123232232123221   >>    C1111121111331311211331333133313331333131232212111113331333132112323223212322   <<    C11111211113313112113313331333133313331312322121111133313331321123232232123223   >>      C11111211113313112113313331333133313331312322121111133313331321123232232123222   >>