C222123232321333131133133313331323133313231323133311322323213221221   >>    C22212323232133313113313331333132313331323132313331132232321322122   <<    C222123232321333131133133313331323133313231323133311322323213221223   >>      C222123232321333131133133313331323133313231323133311322323213221222   >>