C312322331333132212111133133313331323133313331333133321123232311   >>    C31232233133313221211113313331333132313331333133313332112323231   <<    C312322331333132212111133133313331323133313331333133321123232313   >>      C312322331333132212111133133313331323133313331333133321123232312   >>