C1111233131211111211113313331333133313331333133313331333132323233221   >>    C111123313121111121111331333133313331333133313331333133313232323322   <<    C1111233131211111211113313331333133313331333133313331333132323233223   >>      C1111233131211111211113313331333133313331333133313331333132323233222   >>