C11111211113313112113313331333133313231121131211111333133313223323221   >>    C1111121111331311211331333133313331323112113121111133313331322332322   <<    C11111211113313112113313331333133313231121131211111333133313223323223   >>      C11111211113313112113313331333133313231121131211111333133313223323222   >>