C11111211113313112113313331333133313331333131211113313232212113321   >>    C1111121111331311211331333133313331333133313121111331323221211332   <<    C11111211113313112113313331333133313331333131211113313232212113323   >>      C11111211113313112113313331333133313331333131211113313232212113322   >>