C312322331333132212111133133313331323133313221211111231232322311   >>    C31232233133313221211113313331333132313331322121111123123232231   <<    C312322331333132212111133133313331323133313221211111231232322313   >>      C312322331333132212111133133313331323133313221211111231232322312   >>