C11112331333132311331333133313331323132313331211111323132313331323211321   >>    C1111233133313231133133313331333132313231333121111132313231333132321132   <<    C11112331333132311331333133313331323132313331211111323132313331323211323   >>      C11112331333132311331333133313331323132313331211111323132313331323211322   >>