C11111211113313112113313331333132313331322121111133313331333133313223313221   >>    C1111121111331311211331333133313231333132212111113331333133313331322331322   <<    C11111211113313112113313331333132313331322121111133313331333133313223313223   >>      C11111211113313112113313331333132313331322121111133313331333133313223313222   >>