C1111233131211111211113313331333133313331313221131211111323221323231   >>    C111123313121111121111331333133313331333131322113121111132322132323   <<    C1111233131211111211113313331333133313331313221131211111323221323233   >>      C1111233131211111211113313331333133313331313221131211111323221323232   >>