C312322331333132212111133133313331323133313221211113313211231231   >>    C31232233133313221211113313331333132313331322121111331321123123   <<    C312322331333132212111133133313331323133313221211113313211231233   >>      C312322331333132212111133133313331323133313221211113313211231232   >>