C11112331312111112111133133313231333132313331333132321132133311321   >>    C1111233131211111211113313331323133313231333133313232113213331132   <<    C11112331312111112111133133313231333132313331333132321132133311323   >>      C11112331312111112111133133313231333132313331333132321132133311322   >>