C312322331333132212111133133313331323133313221211111122112322121   >>    C31232233133313221211113313331333132313331322121111112211232212   <<    C312322331333132212111133133313331323133313221211111122112322123   >>      C312322331333132212111133133313331323133313221211111122112322122   >>