C11111211113313112113313331333132313331322121111133313331323133313222232121121   >>    C1111121111331311211331333133313231333132212111113331333132313331322223212112   <<    C11111211113313112113313331333132313331322121111133313331323133313222232121123   >>      C11111211113313112113313331333132313331322121111133313331323133313222232121122   >>