C1111233133313231133133313331333133313231312111133133313222122313223121   >>    C111123313331323113313331333133313331323131211113313331322212231322312   <<    C1111233133313231133133313331333133313231312111133133313222122313223123   >>      C1111233133313231133133313331333133313231312111133133313222122313223122   >>