C111113331333132322331333133313331323133313233213133313231333112121121   >>    C11111333133313232233133313331333132313331323321313331323133311212112   <<    C111113331333132322331333133313331323133313233213133313231333112121123   >>      C111113331333132322331333133313331323133313233213133313231333112121122   >>