C312322331333132212111133133313331323133313221211113313231211231   >>    C31232233133313221211113313331333132313331322121111331323121123   <<    C312322331333132212111133133313331323133313221211113313231211233   >>      C312322331333132212111133133313331323133313221211113313231211232   >>