C11111211113313112113313331333133313331312322121111331323223313221231   >>    C1111121111331311211331333133313331333131232212111133132322331322123   <<    C11111211113313112113313331333133313331312322121111331323223313221233   >>      C11111211113313112113313331333133313331312322121111331323223313221232   >>