C222123232321333131133133313331333132313231333133311212312213232121321   >>    C22212323232133313113313331333133313231323133313331121231221323212132   <<    C222123232321333131133133313331333132313231333133311212312213232121323   >>      C222123232321333131133133313331333132313231333133311212312213232121322   >>