C312322331333132212111133133313331323132322331333132313311232322311   >>    C31232233133313221211113313331333132313232233133313231331123232231   <<    C312322331333132212111133133313331323132322331333132313311232322313   >>      C312322331333132212111133133313331323132322331333132313311232322312   >>