C11111333133313232233133313331333132313231121133132313221312321   >>    C1111133313331323223313331333133313231323112113313231322131232   <<    C11111333133313232233133313331333132313231121133132313221312323   >>      C11111333133313232233133313331333132313231121133132313221312322   >>