C222123232321333131133133313331323133313231323133311322323221321   >>    C22212323232133313113313331333132313331323132313331132232322132   <<    C222123232321333131133133313331323133313231323133311322323221323   >>      C222123232321333131133133313331323133313231323133311322323221322   >>