Yes, but only its allocatable variant strings can be applied for along with the primary string. An applicant must include all desired allocatable variant strings together with the primary string in its application during the initial submission. No variant strings can be added later within the same round.
All applied-for variant strings must be calculated by the RZ-LGR as allocatable variant strings and the applicant must ensure that, if the application proceeds to delegation, the primary and variant strings must be managed by the same registry operator and use the same backend registry service provider, along with other requirements as defined.