C222123232321333131133133313331333132313231333112323321323223121   >>    C22212323232133313113313331333133313231323133311232332132322312   <<    C222123232321333131133133313331333132313231333112323321323223123   >>      C222123232321333131133133313331333132313231333112323321323223122   >>