C11111211113313112113313331333133313331333132212111133133313331322331323232211   >>    C1111121111331311211331333133313331333133313221211113313331333132233132323221   <<    C11111211113313112113313331333133313331333132212111133133313331322331323232213   >>      C11111211113313112113313331333133313331333132212111133133313331322331323232212   >>