C11111211113313112113313331333133312111113331333133313332233312331121132321   >>    C1111121111331311211331333133313331211111333133313331333223331233112113232   <<    C11111211113313112113313331333133312111113331333133313332233312331121132323   >>      C11111211113313112113313331333133312111113331333133313332233312331121132322   >>