C22212323232133313113313331333132313331323133313332331132223112132121121   >>    C2221232323213331311331333133313231333132313331333233113222311213212112   <<    C22212323232133313113313331333132313331323133313332331132223112132121123   >>      C22212323232133313113313331333132313331323133313332331132223112132121122   >>