C11111211113313112113313331313331323133313331333133313223323131   >>    C1111121111331311211331333131333132313331333133313331322332313   <<    C11111211113313112113313331313331323133313331333133313223323133   >>      C11111211113313112113313331313331323133313331333133313223323132   >>