C312322331333132212111133133313331333133312121111331121133133313222313231221   >>    C31232233133313221211113313331333133313331212111133112113313331322231323122   <<    C312322331333132212111133133313331333133312121111331121133133313222313231223   >>      C312322331333132212111133133313331333133312121111331121133133313222313231222   >>