C312322331333132212111133133313331323133313221211111211111231211331333112313121   >>    C31232233133313221211113313331333132313331322121111121111123121133133311231312   <<    C312322331333132212111133133313331323133313221211111211111231211331333112313123   >>      C312322331333132212111133133313331323133313221211111211111231211331333112313122   >>