C1111233131211111211113313331333133313331312331333131133132233113211321   >>    C111123313121111121111331333133313331333131233133313113313223311321132   <<    C1111233131211111211113313331333133313331312331333131133132233113211323   >>      C1111233131211111211113313331333133313331312331333131133132233113211322   >>