C11111211113313112113313331333133313331333132313231333133313331323132233323221   >>    C1111121111331311211331333133313331333133313231323133313331333132313223332322   <<    C11111211113313112113313331333133313331333132313231333133313331323132233323223   >>      C11111211113313112113313331333133313331333132313231333133313331323132233323222   >>