C312322331333132212111133133313331323132322331333132313231333211   >>    C31232233133313221211113313331333132313232233133313231323133321   <<    C312322331333132212111133133313331323132322331333132313231333213   >>      C312322331333132212111133133313331323132322331333132313231333212   >>