C11111211113313112113313331333133313331312322121111331333132233323323211221   >>    C1111121111331311211331333133313331333131232212111133133313223332332321122   <<    C11111211113313112113313331333133313331312322121111331333132233323323211223   >>      C11111211113313112113313331333133313331312322121111331333132233323323211222   >>