C1111233131211111211113313331333133313231121133212331333132322331231   >>    C111123313121111121111331333133313331323112113321233133313232233123   <<    C1111233131211111211113313331333133313231121133212331333132322331233   >>      C1111233131211111211113313331333133313231121133212331333132322331232   >>