C11111211113313112113313331333133313331312111113331322133313222211   >>    C1111121111331311211331333133313331333131211111333132213331322221   <<    C11111211113313112113313331333133313331312111113331322133313222213   >>      C11111211113313112113313331333133313331312111113331322133313222212   >>